Question

15ах+20ау=
36ву-9су=
х^2-ху=
ух-у^2=

Answer 1

= 5а(3х +4у)
= 9у(4в - с)
= х(х -у)
= у(х -у)

Answer 2

$15ax+20ay=10a(frac{3}{2}x+2y)\\36by-9cy=9y(4b-c)\\x^2-xy=x(x-y)\\xy-y^2=y(x-y)$