Answer 216=2×108= 2×2×54=2×2×2×27=8×27 x^8+19x^5-216x^2 =x^2(x^6+19x^3-216) =x^2(x^3+27)(x^3-8) =x^2(x+3)(x^2-3x+1)(x-2)(x^2+2x+1) Steven Zheng posted 2 years ago