Question

СРОЧНО ПОМОГИТЕ ПЖ, ДАЮ 20 БАЛЛОВ​

Answer 1

$\displaystyle 1)48c+36q=12(4c+3q)\\\\ 2)4x(x+y)-5x^2(x+y)=x(x+y)(4-5x)\\\\ 3)a(x-y)+b(y-x)=a(x-y)+b(-(x-y))=a(x-y)-b(x-y)=(x-y)(a-b)$