(9x - 1)(9x - 1)
9x2 + 9x - 10 =(3x - 2)(3x + 5)
3(x2 + 3x + 1)
As written, -5x + 9x = 4x 4x - 4 = 4(x - 1) If that's -5x2 + 9x - 4, that factors to -(x - 1)(5x - 4)
(2x+3)(x+3)
6x2-9x-6 is equal to 66.
6x2 + 9x = 0 3x(2x + 3) = 0 3x = 0 or 2x + 3 = 0 x = 0 or x = -3/2
(9x - 1)(9x - 1)
5x2 + 9x + 4 = (x + 1)(5x + 4).
6x2 + 11x + 3 = 6x2 + 9x + 2x + 3 = 3x(2x + 3) + 1(2x + 3) = (2x + 3)(3x + 1)
2x2+9x+9 = (2x+3)(x+3) when factored
81x2 + 72x + 16 = 81x2 + 36x + 36x + 16 = 9x(9x + 4) + 4(9x + 4) = (9x + 4)2
18x2y
-x(x - 3)(x - 3)
3/(x2+4x-1) = 6/(2x2-3x+5) Cross - multiply in order to eliminate the fractions: 6*(x2+4x-1) = 3*(2x2-3x+5) 6x2+24x-6 = 6x2-9x+15 6x2-6x2+24x+9x = 15+6 33x = 21 x = 21/33 => x = 7/11
Dividing all terms by 2 gives: x2+9x+18 = (x+3)(x+6) when factored
11 + 9X