-- Posted by youngage at 4:48 pm on July 6, 2009 so i have to factor these... please help... little reaview.... a) x^3 - x^2 - 16x + 16 b)2x^4 + 3x^3 - 32x^2 - 48x thanks.... more to come -- Posted by blitzerdog at 4:51 pm on July 6, 2009 A) Factor by grouping x2(x-1)-16(x+1) (x2-16)(x-1)(x+1) (x+4)(x-4)(x-1)(x+1) B) x3(2x+3)-8x(4x-8) (x3-8x)(2x+3)4(x-2) -- Posted by blitzerdog at 4:51 pm on July 6, 2009 B was hard to do in my head..I could be wrong because its hard to see in that format of writing on livewire. -- Posted by LiveForeverDieTonite at 4:59 pm on July 6, 2009 a) (x^2-16)(x-1)(x+1) b) x(x^2+16)(2x+3)(2x-3)