Question

F(x)=-4x-1
g(x)= x^3-4

Find f(x)*g(x)

Answer 1

Answer:
`f(\text{x}) \cdot g(\text{x}) = -4\text{x}^4-\text{x}^3+16\text{x}+4`

Work Shown:

`f(\text{x}) \cdot g(\text{x}) = (-4\text{x}-1)(\text{x}^3-4)\\\\f(\text{x}) \cdot g(\text{x}) = -4\text{x}(\text{x}^3-4)-1(\text{x}^3-4)\\\\f(\text{x}) \cdot g(\text{x}) = -4\text{x}^4+16\text{x}-\text{x}^3+4\\\\f(\text{x}) \cdot g(\text{x}) = -4\text{x}^4-\text{x}^3+16\text{x}+4\\\\`

As an alternative, you can use the FOIL rule.