SOLUTION: find f(-2) for the function f(x)=2x^2+x-5 thanks for your help :)

SOLUTION: find f(-2) for the function f(x)=2x^2+x-5 thanks for your help :)

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Question 643428: find f(-2) for the function f(x)=2x^2+x-5 thanks for your help :)
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
find f(-2) for the function f(x)=2x^2+x-5
.
simply plug in -2 for x:
f(x)=2x^2+x-5
f(-2)=2(-2)^2+(-2)-5
f(-2)=2(4)+(-2)-5
f(-2)=8-2-5
f(-2)= 1

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