Question

factorise using suitable identities x2
${ {}^{ x} }^{2}$
- 121

Answer 1

${x}^{2} - 121 \\ = {x}^{2} - {11}^{2} \\ wkt \: ( {x}^{2} - {y}^{2} ) = (x - y)(x + y) \\ = (x - 11)(x + 11)$
hope it helps

Answer 2

Answer:

Step-by-step explanation:

= using identity (a+b)^2

(x+11)^2

x^2+11^2+2×11×x

=x^2+ 121+22x

Hope it helps you