4. 12x^2-64x-256=4(3x^2-16x-64)
(4x + 5)(3x - 7)
(2x - 5)(2x - 3)
Greatest common factor of 16x and 36x is 4x.
While it is possible to factor 3x2 from both of these and get 3x2(4 - 1), it's a lot easier to subtract 3x2 from 12x2 and get 9x2
4. 12x^2-64x-256=4(3x^2-16x-64)
12x2-x-35 = (4x-7)(3x+5)
It will be: 6x2 +8x -15
12x2-23x+10 = (3x-2)(4x-5) when factored
12x2-8x
(4x + 5)(3x - 7)
15x2+16x-15 = (3x+5)(5x-3) when factored
(3x + 1)(x + 5)
(4x + 5)(3x - 7)
12x2 - 28x - 15= 12x2 - 18x - 10x - 15= 6x(2x - 3) - 5(2x - 3)= (6x - 5)(2x - 3)
Factor: x3 - 12x2 + 35x 1. Factor out a x: x(x2 - 12x + 35). 2. Factor x2 - 12x + 35 which is (x-5)(x-7). 3. Answer: x(x-5)(x-7).
x3 + 12x2 - 5x = x(x2 + 12x - 5) = x(x + 6 - √41)(x + 6 + √41)