Question

9^2 - (x^2+ 2x + 1).
factorise​

Answer 1

Answer:

(8-x)(10+x)

Step-by-step explanation:

${9}^{2} - ( {x}^{2} + 2x + 1)$

${9}^{2} - {(x + 1)}^{2}$

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

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

$(8 - x)(10 + x)$

Answer 2

Answer:

9² - (x²+2x+1)

= 9² - (x²+x+x+1)

= 9² - [x(x+1)+1(x+1)]

= 9² - (x+1)(x+1)

= 9² - (x+1)²

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

= (10+x)(8+x)