3(8x + 1)(8x - 1)
x2-8x+15 = (x-3)(x-5)
3 is a factor and dividing by 3 gives x + 15 = 8x
By inspection. X^2 - 8X - 33 (X - 11)(X + 3) FOIL and see. X = 11 X = - 3
hcf(6x², 8x) = 2x 6x² = 2 × 3 × x² 8x = 2³ × x → hcf = 2 × x = 2x
(4x-3)(4x+3)
(4x - 3)(4x - 1)
3(8x + 1)(8x - 1)
-8x + 3x2 - 3
(8x - 3)(8x + 3)
There is a formula for the "difference of squares." In this case, the answer is (4x + 3)(4x - 3)
(4x + 3)(4x + 3) (4x + 3)2
x2 + 8x + 15 = (x + 3)(x + 5)
x2-8x+15 = (x-3)(x-5)
x2 + 8x + 15 = (x + 3) (x + 5).
2(4x - 3)
3 is a factor and dividing by 3 gives x + 15 = 8x