Question

15сх+2су-сху-30с разложите на множители

Answer 1

$15cx+2cy-cxy-30c=c(15x+2y-xy-30)=c(x(15-y)-2(15- \\ y))=c(x-2)(15-y)$

Answer 2

15cx-30c+2cy-cxy=15c(x-2)+cy(2-x)