Question

Разложить на множители:
1) xy+xz-ay-az
2 2 2 2
2)ax - bx + ax - ay - bx + by

Answer 1

x (y+z)-a (y+z)=(x-a)(y+z)
2ax-2bx-ay+by=2x (a-b)-y (a-b)=(2x-y)(a-b)