Yahoo Answers: Answers and Comments for What is a long and complicated math equation that equals 15? [Mathematics]
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From Anonymous
enUS
Wed, 20 May 2009 13:21:57 +0000
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Yahoo Answers: Answers and Comments for What is a long and complicated math equation that equals 15? [Mathematics]
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From :) TJ :): sqrt(([(3*4*5*6)310]/2))+((5!)/12) = 15 haha
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Wed, 20 May 2009 13:30:14 +0000
sqrt(([(3*4*5*6)310]/2))+((5!)/12) = 15 haha

From erdahl: Complicated Math Equation
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Thu, 29 Sep 2016 03:05:11 +0000
Complicated Math Equation

From Anonymous: x^210x+y^220y=125 what is x+y=?
(Solutio...
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https://answers.yahoo.com/question/index?qid=20090520132157AA18rJz
Sat, 23 May 2009 19:38:33 +0000
x^210x+y^220y=125 what is x+y=?
(Solution)
First complete the square
This is done by taking the x and y term (numbers in front of x and y not x^2 y^2) dividing it by 2 and squaring it and adding it to the other side so you get
x^210x+25+y^220y+100=0
now break it up
x^210x+25=0 and y^220y+100=0
trinomial factor it (draw an x put the last number on the top and the middle number on the bottom from each equation) now you want two numbers to put in the side of the x they will be the same number and must multiply to equal the top number and add to be the bottom number so for the x one i used used 5 (5^2=25 and 5+5=10) and for the y i used 10 (10^2=100 and 10+10=20) so those work now to write it in factored from its simply (x5)^2+(y10)^2=0 so now just take the opposite of the number in the ( ) for the answers so x=5 and y=10 because (55)^2+(1010)^2=0 and to check you can plug it into the original equation to find that when x=5 and y=10 it will equal 125 as the original equations says so now x+y=5+10 which equals 15 the number you wanted :) hope that's long enough and i explained my process well enough

From #1: 48/312+8*210/25*3+87+8
(if u use a calc...
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Wed, 20 May 2009 13:37:47 +0000
48/312+8*210/25*3+87+8
(if u use a calculator put it in piece by piece or else u will get 9)

From EJ T: Take the square root of 100 and multiply that ...
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Wed, 20 May 2009 13:33:39 +0000
Take the square root of 100 and multiply that by 5. Then add 30, minus 5, then divide by 5.

From Teddy: 4 times 5 9+4
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Wed, 20 May 2009 13:30:18 +0000
4 times 5 9+4

From Anonymous: 3 times 5  2 +64
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Wed, 20 May 2009 13:26:45 +0000
3 times 5  2 +64