Question

Given: 2x^2+3x-5, g(x)=x+9. Find: (fg)(3)

Answer 1

264

Explanation:

`f(x)=2x^2+3x-5`

`g(x)=x+9`

`(fg)(x)=f(x) * g(x)`

`\implies (fg)(x)=(2x^2+3x-5)(x+9)`

`(fg)(3)=(2(3)^2+3(3)-5)(3+9)`

`\implies (fg)(3)=22 * 12`

`\implies (fg)(3)=264`