50x5-75x4+40x3-60x2+8x-12 This has 6 terms, so we group the odd degree terms together and the even degree terms together: (50x5+40x3+8x)+(-75x4-60x2-12) We can factor 2x out of the first parentheses and -3 out of the second parentheses: 2x(25x4+20x2+4)-3(25x4+20x2+4) Now we can factor (25x4+20x2+4) out of each and leave 2x and -3 to go in a parentheses: (25x4+20x2+4)(2x-3) We can also factor the trinomial in the first parentheses and get: (5x2+2)(5x2+2)(2x-3) and since the first two factors are the same, we can write: (5x2+2)2(2x-3) Edwin