SOLUTION: let f(x)= 2x^2 -7 and g(x) =x-4 a. find the composite function (f o g)(x) and simplify. b. find (f o g)(-1). show work

Algebra ->  Average -> SOLUTION: let f(x)= 2x^2 -7 and g(x) =x-4 a. find the composite function (f o g)(x) and simplify. b. find (f o g)(-1). show work      Log On


   

Question 1116637: let f(x)= 2x^2 -7 and g(x) =x-4
a. find the composite function (f o g)(x) and simplify.
b. find (f o g)(-1). show work
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
f o g
2%28x-4%29%5E2-7
2%28x%5E2-8x%2B16%29-7
2x%5E2-16x%2B32-7
2x%5E2-16x%2B25

Make the simple x=-1 substitution and evaluate for the part (b).