Question

Class 9

if (x+1) is a factor of x³+2x²-5x-6, then factorise it.

please give me the answer fast...​

Answer 1

9514 1404 393

Answer:

(x +3)(x +1)(x -2)

Explanation:

A graphing calculator is a good tool for finding factors fast. Each zero (p) gives rise to a factor (x -p).

The graph shows zeros at -3, -1, and 2, so your factorization is ...

(x +3)(x +1)(x -2)