Question

Can someone plz help me with this math equation!

Answer 1

x² + 2x + 9 -
`(7)/(x+3)`

Explanation:

Using Synthetic division

- 3 | 1 5 15 20

↓ - 3 - 6 - 27

----------------------------

1 2 9 - 7 ← remainder r(x)

Quotient Q(x) = x² + 2x + 9

Thus

x³ + 5x² + 5x + 20 = x² + 2x +9 -
`(7)/(x+3)`