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Lyra's calification by Pandramodo Lyra's calification by Pandramodo
:iconlyraponyplz::iconsaysplz:problem? :iconhiddentrollfaceplz:
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:iconspykethehedgehog:
SpykeTheHedgehog Featured By Owner May 17, 2015  Student Digital Artist
Ahh, my brain, it hurts! D:
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:iconfroncake:
Froncake Featured By Owner Edited Apr 13, 2015
X = 9

x+√x-1=2x-7

Let's solve your equation step-by-step.
x+√x−1=2x−7
x+x−1=2x−7

Step 1: Add 1 to both sides.
x+x−1+1=2x−7+1
x+x=2x−6

Step 2: Add -x to both sides.
x+x+−x=2x−6+−x
x=x−6

Step 3: Solve Square Root.
x=x−6
x= (x−6)2(Square both sides)
x=x2−12x+36
x−(x2−12x+36)=x2−12x+36−(x2−12x+36)(Subtract x^2-12x+36 from both sides)
−x2+13x−36=0
(−x+4)(x−9)=0(Factor left side of equation)
−x+4=0 or x−9=0(Set factors equal to 0)

x=4 or x=9

x=4(Doesn't work in original equation)
x=9(Works in original equation)
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:iconismalith:
Ismalith Featured By Owner 2 days ago
I tried it for myself and came to 9,815 or 0,815

x+sqrt(x-1) = 2x-7;                       // Initial Problem
sqrt(x-1) = x-7;                             // isolate the sqrt()
x-1 = x²-7x-1x+7;                         // multiply with x-1 to get the sqrt() out
x-1 = x²-8x+7;                              // a little cleaning
-x² = -9x +8;                                 // isolate x²
x² = 9x-8;                                     // turn - to + by *(-1)
[9+/- sqrt(81-4*(-8))]/2;               // abc formula
[9+/- 10,63]/2;                             // get rid of sqrt()

after that x1= 9,815 and x2 = 0,815.
I think at least.
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:icongoldentorizo:
GoldenTorizo Featured By Owner May 17, 2015
Ugh, I hated doing these kinds of equations. D:

Will you be my tutor for these whenever I come across these equations again?
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:iconfroncake:
Froncake Featured By Owner May 18, 2015
Nah, I just wanted to prove to myself that I still remembered how to do it.
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:iconworldwalker128:
WorldWalker128 Featured By Owner Apr 22, 2015
I remember doing stuff like this in college, but now I doubt I could solve it if I needed to. Never saw that type of math being important beyond schooling, so I never bothered to keep it in my head.
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:iconblazing-flight:
Blazing-Flight Featured By Owner Apr 13, 2015
Sorry buddy but it is root(x-1) not root(x)-1. Thus the answer is 10 with 5 being extraneous. That being said at least your math was right.
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:iconfroncake:
Froncake Featured By Owner Apr 13, 2015
Damn. Well thanks for correcting me. Heart 
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:iconblazing-flight:
Blazing-Flight Featured By Owner Apr 13, 2015
Always here to help.
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:iconmoonfur-the-umbreon:
Moonfur-The-Umbreon Featured By Owner Apr 10, 2015  New member
her face XD
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:iconmime432:
mime432 Featured By Owner Apr 10, 2015
You know shit hit the fan when Lyra schools the Doctor
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:icongoldduststarwarrior5:
Goldduststarwarrior5 Featured By Owner Apr 9, 2015  Hobbyist General Artist
LOL
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:iconhappynattie:
HappyNattie Featured By Owner Apr 8, 2015  Student
Lyra is smart
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:iconiamnotachangeling:
IAmNotAChangeling Featured By Owner Apr 8, 2015  New member
Ths reminded me of school
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:iconspykethehedgehog:
SpykeTheHedgehog Featured By Owner May 17, 2015  Student Digital Artist
Seconding this. These equations drove me insane.
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:iconiamnotachangeling:
IAmNotAChangeling Featured By Owner Apr 8, 2015  New member
This reminded me of school
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:iconyoshiondiviantart:
Yoshiondiviantart Featured By Owner Apr 8, 2015  Hobbyist Digital Artist
Lyra's so good at math, even Doctor Hooves is surprised. 
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:iconsegasister:
SEGASister Featured By Owner Apr 8, 2015  Hobbyist Writer
That equation does not work for when x=0
0+the square root of -1 is i
2•0-7 is -7
i is not -7
[overanalyzing!]
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:iconrainbowdashofcd:
RainbowDashOfCD Featured By Owner Apr 7, 2015  Hobbyist Traditional Artist
Lyra is best troll.
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:iconilovethecolorpink:
ilovethecolorpink Featured By Owner Apr 7, 2015
DAMIT LYRA!!!! lol nice one...
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:iconkarolkwiecjasz:
Karolkwiecjasz Featured By Owner Apr 7, 2015
It's 69.
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:iconsakurakudo:
SakuraKudo Featured By Owner Apr 7, 2015
Oh, she is clearly showing a 10~
I don't know why you have a problem with this xD
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:iconfazbearwho:
FazbearWho Featured By Owner Apr 6, 2015
x=9.
I DID IT!!!
*ahem*
I mean, WolframAlpha did it.
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:iconfazbearwho:
FazbearWho Featured By Owner Apr 6, 2015
Lets see... I can't find a square root symbol, so I'll just use sr()
x+sr(x-1)=2x-7
x+sr(x-1)/2=x-7
(x+sr(x-1)/2)+7=x


I'll just leave it for WolframAlpha to compute it.
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:iconsweety402:
Sweety402 Featured By Owner Apr 6, 2015  Student Artist
so
X+the square root of X-1=2X-7
the square root throws me off but if you give me time I'll figure it out
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:icondiscute:
Discute Featured By Owner Apr 5, 2015
how about: 1+1=1,000?Problem? 
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:iconmemeticbiohazard:
memeticbiohazard Featured By Owner Apr 5, 2015
One sec... That's a quadratic. IT'S A QUADRATIC. HOW DOES THIS SCORING SYSTEM EVEN WORK WHEN THERE ARE TWO VALUES?
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:iconinvader-franky:
Invader-Franky Featured By Owner Apr 5, 2015  Hobbyist General Artist
Extraneous Solution, x=10
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:iconpopoking93:
Popoking93 Featured By Owner Apr 5, 2015
She must have seen hands.
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:iconmooonmoon:
MooonMoon Featured By Owner Mar 17, 2015  Student General Artist
wooooow :icontrollfaceplz:
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:icontacoleturtle:
TacoLeTurtle Featured By Owner Mar 7, 2015
I could solve it, but I'm to lazy. LYRA!? Y U MAKE IT HARD ON UR SELF??!! ITS IS WAY TO HARD TO MAKE THOSE!
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:iconpinksparklejoy:
Pinksparklejoy Featured By Owner Feb 21, 2015
What?!?! How am I a 8th grader supposed to figure that out?!?!?!:idontgetit: 
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:iconwolfcho:
Wolfcho Featured By Owner Apr 6, 2015
X=10, Duh.
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:iconpinksparklejoy:
Pinksparklejoy Featured By Owner Apr 6, 2015
.....This is why I'm failing math!!!
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:iconcrimson-graphite:
Crimson-Graphite Featured By Owner Apr 6, 2015  Hobbyist General Artist
Omg, you're right. Good job!
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:iconnamelessslinger:
NamelessSlinger Featured By Owner Feb 15, 2015
Is it 16? 0.o
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:iconinda26:
inda26 Featured By Owner Jan 2, 2015  Hobbyist General Artist
im just sayin 42......
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:iconscarecrow8642:
Scarecrow8642 Featured By Owner Nov 13, 2014  Hobbyist Digital Artist
*cough* Eleven *cough*
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:iconwolfcho:
Wolfcho Featured By Owner Apr 6, 2015
*cough* TEN *cough*
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:iconscarecrow8642:
Scarecrow8642 Featured By Owner Apr 6, 2015  Hobbyist Digital Artist
*cough* I trolololol *cough*
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:iconsonicthebone:
sonicthebone Featured By Owner Nov 5, 2014  Hobbyist Digital Artist
I love your art style! And also I'm utterly confused by this.
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:iconcutegirl4875:
cutegirl4875 Featured By Owner Oct 31, 2014  Hobbyist General Artist
What?!! Pinkie Pie Scream01 
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:iconvideogeek95:
Videogeek95 Featured By Owner Oct 3, 2014
...I only took Pre-Algebra my Senior Year... So I'm utterly fucked...
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:iconrainbine1234:
rainbine1234 Featured By Owner Sep 29, 2014  Professional Traditional Artist
:iconlyraponyplz::iconsaysplz: NAILED IT
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:iconcrazycandyfan:
crazycandyfan Featured By Owner Sep 28, 2014  Student Artist
Damm it Lyra I don't know math!!!!!!!!! 
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:iconthescribbleartcreeps:
TheScribbleArtCreeps Featured By Owner Sep 13, 2014  Student Artist
im not a expert in math!!!!!
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:icondaniel1944:
Daniel1944 Featured By Owner Sep 12, 2014
Y asi es como se creo las mates en ponyville
...
Y SE ACABO EL ALPISTE!!!!!!!
TK (Yo wassup) [V1] TK (Yo wassup) [V1] TK (Yo wassup) [V1] 
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:iconmaster-slayer1991:
Master-slayer1991 Featured By Owner Aug 30, 2014
when i did this i got a 11 can it go that high?
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