SOLUTION: what is the answer of 1.(x/2+y/3)(x/2-y/3) 2. 8m-{-[-(-2mn+n)+(-4n+6m)]} 3.-{-[y+(-2x+5y)-3x]+9y-6x}

Algebra ->  Expressions -> SOLUTION: what is the answer of 1.(x/2+y/3)(x/2-y/3) 2. 8m-{-[-(-2mn+n)+(-4n+6m)]} 3.-{-[y+(-2x+5y)-3x]+9y-6x}      Log On


   

Question 554419: what is the answer of
1.(x/2+y/3)(x/2-y/3)
2. 8m-{-[-(-2mn+n)+(-4n+6m)]}
3.-{-[y+(-2x+5y)-3x]+9y-6x}
Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
=%28x%2F2%2By%2F3%29%28x%2F2-y%2F3%29
Take LCD
=%28%283x%2B2y%29%2F6%29%28%283x-2y%29%2F6%29%29
=%28%283x%29%5E2-%282y%29%5E2%29%2F36
=%289x%5E2-4y%5E2%29%2F36
==============================================================================================
=8m-%28-%28-%28-2mn%2Bn%29%2B%28-4n%2B6m%29%29%29
=8m-%28-%282mn-n-4n%2B6m%29%29
=8m-%28-%282mn-5n%2B6m%29%29
=8m-%28-2mn%2B5n-6m%29%29
=8m%2B2mn-5n%2B6m%29%29
=14m%2B2mn-5n%29%29
==============================================================================================
=-%28-%28y%2B%28-2x%2B5y%29-3x%29%2B9y-6x%29
=-%28-%28y-2x%2B5y-3x%29%2B9y-6x%29
=-%28-%286y-5x%29%2B9y-6x%29
=-%28-6y%2B5x%2B9y-6x%29
=-%283y-x%29
=-3y%2Bx
=x-3y