Question

F(x) = 2x2 - 5
and
g(x) = 5x + 7
Find
f(g(x)) = [ ? ]x2 + [ ]x +

Answer 1

See below

Explanation:

What you need to do is put g(x) in for 'x' of f(x)

f(g(x) = 2(5x+7)^2 -5

2 ( 25x^2 + 70x + 49) - 5

= 50x^2 + 140x + 93