SOLUTION: x^2 - ( 3x+4) = (x +8)(x-5) SOLVE **** the 1st x is sq.

Question 125428: x^2 - ( 3x+4) = (x +8)(x-5) SOLVE
**** the 1st x is sq.
Answer by apachemexican1(64) (Show Source): You can put this solution on YOUR website!
x^2-(3x+4)=(x+8)(x-5)
First use foil
x^2-(3x+4)=x^2-5x+8x-40
then combine like terms
x^2-3x-4=x^2+3x-40
now move all x's to one side of the
equation and regular numbers to the other
to make an equation.
x^2-x^2-3x-3x=-40+4
now add or subtract like terms
-9x=-36
now divide -9 to both sides
-9x/-9=-36/-9
x=4
good luck!!!
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