(10x + 3)(x - 1)
-2x(x + 3)(x + 2)
10x2 - 64 = 36 + 6x2; whence, 4x2 - 100 = 0, x2 = 25, and x = ±5.
(2x + 1)(5x - 6)
A non-square matrix cannot be inverted.
(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
-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)
2 x 4) + (10 x 3) =