Answer:
f(5) = 20
Explanation:
so, we're going to plug in 5 as our x value, and the equation becomes:
f(5) = - (5)
now we'll simplify
f(5) = 25 - 5
now solve...
plug the 5 into the function
f(5)=(5)^2-5
f(5)= 25-5
f(5)=20
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