Question

(xy-7)(xy + 4),Expand the given equation.

Answer 1

hello mate!....

$given..... \\ \\ (xy - 7)(xy + 4) \\ \\ = (xy) {}^{2} + 4xy - 7xy - 28 \\ \\ = (xy) {}^{2} - 3xy - 28$

Answer 2

HELLO FRIEND,

HERE IS YOUR ANSWER,

(xy-7)(xy+4)= x^(2)×y^(2) - 3xy- 28.

I HOPE THIS WILL HELP YOU ....!!!!!!