Question

let f(x) =3x-4 and g(x) x²+3x,find g(1)

Answer 1

Answer:

Given, f(x) = x2 + 3x - 4 and g(x) = x + 5.

We have to find f(x) . g(x)

f(x) . g(x) = (x2 + 3x - 4) (x + 5)

Using the multiplicative distributive property

f(x) . g(x) = x3 + 5x2 + 3x2 + 15x - 4x - 20

So we get

f(x) . g(x) = x3 + 8x2+ 11x - 20

Therefore, f(x) . g(x) is x3 + 8x2+ 11x - 20.