SOLUTION: How do you solve f(x)=8? With f(x)=x^2-x-12

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Question 493099: How do you solve f(x)=8?
With f(x)=x^2-x-12
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
8=x%5E2-x-12 Set the equation equal to zero
x%5E2-x-20=0 Solve this quadratic equation
x%5E2-x-20=%28x%2B4%29%28x-5%29=0 The roots are x=-4 and x=5.