SOLUTION: Solve x^2-7x-8=0 is three different. Ways

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Question 721056: Solve x^2-7x-8=0 is three different. Ways
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
(1)USE QUADRATIC FORMULA
X(X-3)=0
X=0,X=3
X^2+7X-8=0
x=8,-1
(2)FACTOR USING INVERSE FOIL
X^2-8X+X-8=0
X(X-8)-(X-8)=0
(X-8)(X-1)=0
X=8 OR X=1
(3)SOLVE FOR X
X^2=-7X+8
X^2+7X-8=0
(X+8)(X-1)=0
X=-1,8