Question

..............:") pwees

Answer 1

Check as the pic above showed

Answer 2

`x^(4)` - x³ - 15x² - 61x - 36

Explanation:

Given

(x² - 5x - 4)(x² + 4x + 9)

Each term in the second factor is multiplied by each term in the first factor, that is

x²(x² + 4x + 9) - 5x(x² + 4x + 9) - 4(x² + 4x + 9) ← distribute parenthesis

=
`x^(4)` + 4x³ + 9x² - 5x³ - 20x² - 45x - 4x² - 16x - 36 ← collect like terms

=
`x^(4)` - x³ - 15x² - 61x - 36