Question

РОЗКЛАДІТЬ НА МНОЖНИКИ(НА ФОТО)

Answer 1

Ответ:

$(c-d)(c+d+4)\\\\(x-y)(5xy-x-y)$

Объяснение:

$c^2-d^2+4c-4d=(c-d)(c+d)+4(c-d)=(c-d)(c+d+4)\\\\\\\\5x^2y-5xy^2-x^2+y^2=5xy(x-y)-(x^2-y^2)=5xy(x-y)-(x-y)(x+y)=\\\\(x-y)(5xy-(x+y))=(x-y)(5xy-x-y)$