Вправи: 698

698. Розкладіть на множники:

1) a – 3a = a – 3a = a(1 – 3);

2) 7p + 4p = 7p + 4p = p(7 + 2);

3) 21 + 7 = 37 + 7 = 7(3 + 1);

4) 6 – 10 = 23 – 25 = 2(3 – 5);

5) 2m – 6m = (2)²m – 23(m)² = 2m(2 – 3m);

6) 5x – 10x = 5(x)² – 25x = 5x(x – 2).