Question

(f o g)(3x^2) << question ...f=4x-10 g=2x^2

Answer 1

(f o g)(x) = f(g(x))

so if f(x) = 4x-10 and g(x) = 2x^2

then
f(g(x))
= f(2x^2)
= 4(2x^2) - 10
= 8x^2 - 10

then (f o g)(3x^2) = 8(3x^2)^2 - 10
= 72x^4 - 10