В решении.
Объяснение:
Разложить на множители:
1) ху² - by² - ax + ab + y² - a =
= (xy² - by² + y²) - (ax - ab + a) =
= y²(x - b + 1) - a(x - b + 1) =
= (x - b + 1)(y² - a).
2) ax² - ay - bx² + cy + by - cx² =
= (ax² - bx² - cx²) - (ay - by - cy) =
= x²(a - b - c) - y(a - b - c) =
= (a - b - c)(x² - y).
ответ:1)(y² - a)(x - b + 1)
2)(x² - y)(a - b - c)
Объяснение:
1) ху² - by² - ax + ab + y² - a =
= (xy² - by² + y²) - (ax - ab + a) =
= y²(x - b + 1) - a(x - b + 1) =
= (y² - a)(x - b + 1).
2) ax² - ay - bx² + cy + by - cx² =
= (ax² - bx² - cx²) - (ay - cy - by) =
= x²(a - b - c) - y(a - b - c) =
= (x² - y)(a - b - c).
