Question

hello mates.....plz solve 24 no. question ......factorise it​

Answer 1

$abx {}^{2} + ab {y}^{2} - {a}^{2} xy - {b}^{2} xy$

$= ab {x}^{2} - {b}^{2} xy + ab {y}^{2} - {a}^{2} xy$

$= bx(ax - by) - ay(ax - by)$

$= (ax - by)(bx - ay)$