(9 - 5u)(9 + 5u)
(7x + 8)(7x - 9)
(8x - 3)(8x + 3)
x2 - 6x - 27 = (x-9)(x+3)
(2x - 9)(2x - 9) or (2x - 9)2
It is: 100x^2 -9 = (10x-3)(10x+3) when factored
(a + 3)(a - 3)
(3 - i)(3 + i)
(9 - 5u)(9 + 5u)
(x + 2)(x - 9)
(7x + 8)(7x - 9)
9(2x - 1)(2x + 1)
(x - 1)(2x - 9)
x2-81 = (x-9)(x+9)
(8x - 3)(8x + 3)
x2 - 6x - 27 = (x-9)(x+3)
(2x - 9)(2x - 9) or (2x - 9)2