Question

9x^2y^2-16 factorize

Answer 1

$9x {}^{2} y {}^{2} - 16$
$(3xy ){}^{2} - (4) {}^{2} \\ using \: identity \: a {}^{2} - b {}^{2} = (a - b)\times (a + b)$
$(3xy - 4) \times (3xy + 4)$

Answer 2

Hi !!!

Here is your answer,

$Factorise \: \: 9 {x}^{2} {y}^{2} - 16 \\ \\ {(3xy)}^{2} - {(4)}^{2} \\ Using \: \: identity \: {a}^{2} - {b}^{2} = (a + b)(a - b) \\ (3xy + 4)(3xy - 4)$


Hope it helps.