Question

Factorise x2- 8x-105
Thanks in advance

Answer 1

full solution ,
x^2-(15-7)x-105
x^2-15x+7x-105
x(x-15)+7(x-15)
(x-15)(x+7)

Answer 2

How to solve your problem

2 − 8 − 105

1. Use the sum-product pattern

x² − 8 − 105

x² + 7 − 15 − 105

2. Common factor from the two pairs

x² + 7 − 15 − 105

x ( + 7 ) −15 ( + 7 )

3. Rewrite in factored form

( + 7 ) − 15 ( +7 )

SOLUTION

( + 7 ) − 15 ( +7 )