(4x - 3)(2x + 3)
x 2 - 5x - 36 = 0; factor. (x-9)(x+4) = 0; set each factor = 0. x - 9 = 0 and x + 4 = 0 So, x = 9 and x = -4.
4x2 - 9 = (2x + 3)(2x - 3)
24
It is: 100x^2 -9 = (10x-3)(10x+3) when factored
(2x - 9)(2x - 9) or (2x - 9)2
(a + 3)(a - 3)
I'm guessing that's 36x^2 - 36x + 9 which factors to 9(2x - 1)(2x - 1)
(3 - i)(3 + i)
(9 - 5u)(9 + 5u)
(x + 2)(x - 9)
(7x + 8)(7x - 9)
4x2-36x+81 (2x-9)(2x-9)
(10x-3(10x+3)
(x - 1)(2x - 9)
x2-81 = (x-9)(x+9)
(8x - 3)(8x + 3)