Question

разложите на множители: 1)а(b-c)-c(c-b);
2)2b(x-y)-(y-x);​

Answer 1

Ответ:

$a(b - c) - c(c - b) = \\ a(b - c) + c(b - c) = \\ (a + c)(b - c)$

$2b(x - y) - (y - x) = \\ 2b(x - y) + (x - y) = \\ (x - y)(2b + 1)$