(10x + 3)(x - 1)
5x(2x - 3)
(10x + 3)(x - 1)
10x2 - 56 = 88 - 6x2 : 10x2 + 6x2 = 88 + 56 : 16x2 = 144 : x2 = 9 : x = ± 3
5x -2x = 3
-2x(x + 3)(x + 2)
(5x - 4)(2x + 3)
17
10x2 - 29x = 21 10x2 - 29x - 21 = 0 so x = -0.6 or x = 3.5
-2x(x + 3)(x + 2)
10x2-5x-5 = (10x+5)(x-1)
10x2 - 20xz + 15xy = 5x (2x - 4z + 3y)