Question

How do you find the remainder when `x^3-19x-30` is divided by x-3?

Answer 1

See explanation.

Explanation:

To find a remainder from division by a polynomial `x-a` it is enough to substitute `a` for `x` in the polynomial.

Here:

`W(x)=x^3-19x-30`

`W(3)=3^3-19*3-30=27-57-30=-60`