Question

Factorise-:

121-2ab-(a²+b²)

Answer 1

121 - 2ab - (a^2 - b^2)

11^2 -(a^2 + b^2 + 2ab)

11^2 - (a+b)^2

(11 - a - b)( 11+ a +b)

Answer 2

Answer:

Step-by-step explanation:

121-2ab-($a^{2} +b^{2}$)

(11^{2})-2ab-a^{2}-b^{2}

11^{2} -(a^{2}+b^{2}+2ab)

11^{2}-(a+b)^{2}

(11+a+b)(11-a-b)