Question

1) 2x(a+b) + 2y(a+b);
2) a(2x-2y)+36(2x-2y)
3) 3c(d+1) - 4b(d + 1);
4) 6q (c-d)- 7p(c-d).

Answer 1

Пошаговое объяснение:

1)

2х(а + b) + 2y(a + b) = (a + b)(2x + 2y) =

2ax + 2bx + 2ay + 2by

2)

a(2x - 2y) + 36(2x - 2y) = (2x - 2y)(a + 36) =

2ax - 2ay + 72x - 72y

3)

3c(d + 1) - 4b(d + 1) = (d + 1)(3c - 4b) =

3cd + 3c - 4bd - 4b

4)

6q(c - d) - 7p(c - d) = (c - d)(6q - 7p) =

6cq - 6dq - 7cp + 7dp