Question

99 x square y square -11

Answer 1

Answer:

11(3xy-1)(3xy+1)

Step-by-step explanation:

99x2y2-11

= 11(9x2y2-1)

= 11{(3xy)2-(1)2}

= 11{(3xy-1)(3xy+1)}

=11(3xy-1)(3xy+1)