Question

разложите на множители многочлен
c(c+3)+2(c+3)
bx-by+3x-3y

Answer 1

$c(c + 3) + 2(c + 3 )= (c + 3)(c + 2)$

$bx - by + 3x - 3y = b(x - y) + 3(x - y) = (x - y)(b + 3)$