4x^(2)(x - 4) + 36(x - 4)
(x - 4) is a common factor to both terms, hence
(4x^(2) + 36)(x - 4)
4(x^(2) + 9)(x - 4) Done!!!!
NB x^(2) + 9 does NOT factor .
4x3 + 16x2 - 180x = 4x(x2 + 4x - 45) = 4x(x + 9)(x - 5)
x5 - 1024 = (x - 4)(x4 + 4x3 + 16x2 + 64x + 256)
16x2 - 25 = (4x + 5) ( 4x - 5)
gcf of 4x3=6 gcf of 3x8=8
16x2 - 25 = (4x + 5) (4x - 5)
The GCF is 2.
34-132
(4x-3)(4x+3)
(4x + 6)(4x - 6)
4x(x2 - 2)
because 4X3=12
If that's 16x2 + 72x + 81, that factors to (4x + 9)(4x + 9) or (4x + 9)2