SOLUTION: Find the solution(s) for when f(x) = -4 if f(x) = x^2 � x and f(x) = 12. a. x = {4} b. x = {-3, 4} c. x = {-4, 3} d. No solution

SOLUTION: Find the solution(s) for when f(x) = -4 if f(x) = x^2 � x and f(x) = 12. a. x = {4} b. x = {-3, 4} c. x = {-4, 3} d. No solution

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Question 152869: Find the solution(s) for when f(x) = -4 if f(x) = x^2 � x and f(x) = 12.
a. x = {4}
b. x = {-3, 4}
c. x = {-4, 3}
d. No solution
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
x^2-x=4
x^2-x-4=0
x=-1.56..., x=2.56... (quadratic formula)
.
x^2-x=12
x^2-x-12=0
(x-4)(x+3)
x=4, x=-3
.
Ed

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