Question

bhai solve these two also...plddd..☺​

Answer 1

Answer:

2. (x+20)(x-20)

3.(x+11)(x-11)

Hope it helps you

Answer 2

Step-by-step explanation:

$\bold{ {x}^{2} - 400}$

$\bold{ {x}^{2} + 20x - 20x - 400}$

$\bold{x(x + 20) - 20(x + 20)}$

$\bold{(x + 20)(x - 20)}$

$\bold{ {x}^{2} - 121}$

$\bold{x^{2} + 11x - 11x - 121 }$

$\bold{x(x + 11) - 11(x + 11)}$

$\bold{(x + 11)(x - 11)}$

I hope it is helpful