SOLUTION: Solve for x (x - 2)(x + 1) = 4

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Question 956948: Solve for x

(x - 2)(x + 1) = 4
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
%28x-2%29%28x%2B1%29=4
x%5E2-x-2=4
x%5E2-x-6=0
%28x-3%29%28x%2B2%29=0
x-3=0 or x+2=0
x=3 or x=-2
CHECK:
For x=3:
%28x-2%29%28x%2B1%29=4
%283-2%29%283%2B1%29=4
1%284%29=4
4=4
For x=-2:
%28x-2%29%28x%2B1%29=4
%28-2-2%29%28-2%2B1%29=4
%28-4%29%28-1%29=4
4=4