SOLUTION: 3.3 Evaluate the function f(x)=x^2 +6x+5 at the given values of the independent variable and simplify. a. f(9)= b. f(x+5)= c. f(-x)=

Question 1012689: 3.3
Evaluate the function f(x)=x^2 +6x+5 at the given values of the independent variable and simplify.
a. f(9)=
b. f(x+5)=
c. f(-x)=
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
For f(x) = x^2 + 6x + 5, we merely substitute the other values for x and evaluate, so that
f(9) = 9^2 + 6(9) + 5 = 81 + 54 + 5 = 140
f(x+5) = (x+5)^2 + 6(x+5) + 5 = x^2 + 10x + 25 + 6x + 30 + 5 = x^2 + 16x + 60
f(-x) = (-x)^2 + 6(-x) + 5 = x^2 - 6x + 5
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