Question

Determine the resulting polynomial:

f(x) = -3x + 5
g(x) = -8x2 – 7x + 9
Find: f(x) · g(x)

Answer 1

`24x^3-19x^2-62x+45`

Explanation:

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

`g(x)=-8x^2-7x+9`

`f(x)*g(x)=(-3x+5)(-8x^2-7x+9)`

`=(-3x)(-8x^2)+(-3x)(-7x)+(-3x)(9)+(5)(-8x^2)+(5)(-7x)+(5)(9)`

`=24x^3+21x^2-27x-40x^2-35x+45`

`=24x^3-19x^2-62x+45`