4x + 20
x(4x-2)
x - 2
(2x-1)(2x-1) = 4x^2 -4x + 1
4x^2 = 16x 16x - 60x = -44x -44x + 225
4x2+4x-8 4(x2+x-2) and (4x+8)(x-1)
x^2-4x/x^2-6x+8 = x(x-4)/(x-2)(x-4) = x/(x-2)
(2x - 9)(2x - 9) or (2x - 9)2
No
sqrt(4x+7) -4 = sqrt(4x-1) squared : (sqrt(4x+7) -4)2 = 4x-1 (4x+7) - 2x4xsqrt(4x+7) +16 = 4x-1 -8xsqrt(4x+7) = -24 sqrt(4x+7) = -24/-8 = 3 squared : 4x+7 = 32 = 9 4x = 9-7 = 2 then x=1/2
8x^2 + 6x - 5 = 8x^2 + 10x - 4x - 5 = 2x * (4x + 5) - (4x + 5) = (2x -1) * (4x + 5)
I assume you wanted this factored: (x+6)(x-2)