因式分解2x^4-5x^3+6x^2-9x+2
问题描述:
因式分解2x^4-5x^3+6x^2-9x+2
答
原式为:2x∧4-5x³+6x²-9x+2
答
=2x⁴-4x³-x³+2x²+4x²-8x-x+2
=2x³(x-2)-x²(x-2)+4x(x-2)-(x-2)
=(x-2)(2x³-x²+4x-1)