Evaluate the function fx28x8 at the given values of the inde

Evaluate the function f(×)=x^2-8x+8 at the given values of the independent varaible and simplify. (simplify your answer.)-----> a. f(7) b. f(×+9) c. f(-x)

Solution

f(×)=x^2 - 8x + 8
a)
f(7)=7^2 - 8*7 + 8
= 49 - 56 + 8
= 1
Answer: 1

b)
f(x+9) = (x+9)^2 -8*(x+9) +8
= (x^2+18x+81) - 8x -72 + 8
= x^2 + 10x +17

c)
f(x) = (-x)^2 -8*(-x) +8
= x^2 + 8*x + 8