а) 2x(x-1) - 3(x-1)2x^2 - 2x - 3x + 32x^2 - 5x + 3
б) ad + ac + 4d + 4ca(d + c) + 4(d + c)(a + 4)(d + c)
а) 2x(x-1) - 3(x-1)
2x^2 - 2x - 3x + 3
2x^2 - 5x + 3
б) ad + ac + 4d + 4c
a(d + c) + 4(d + c)
(a + 4)(d + c)