Вправи: 98

98. Скоротіть дріб:

1) 6x-24y4x = 2(3x-12y)4x = 3x-12y2x;

2) ac+ bc3c = c(a+ b)3c = a+ b3;

3) bx- by2bc = b(x- y)2bc = x- y2c;

4) 6y-6zy- z = 6(y- z)y- z = 6;

5) 11x+22y22ay+ ax = 11(x+2y)a(2y+ x) = 11a;

6) 5x-25y15y-3x = 5(x-5y)3(5y- x) = –5(x-5y)3(x-5y) = –53.