Question

x^2-8x-9
factorise the following​

Answer 1

Step-by-step explanation:

solution

Given:-

${x}^{2} - 8x - 9 \\ \\ factorise \: this \: we \: get \\ \\ {x}^{2} - 9x + x - 9 \\ \\ x(x - 9) + 1(x - 9) \\ \\ (x - 9)(x + 1)$

Answer 2

Step-by-step explanation:

x²-8x-9

-9

/\ -8

-9 + 1

x²-9x+1x-9

x(x-9)+1(x-9)

so

(x+1) (x-9)

x=-1 or x=9