设多项式2x^4-x^3+ax^2+3x+b能被x^2-2x+2整除,求a,b的值
问题描述:
设多项式2x^4-x^3+ax^2+3x+b能被x^2-2x+2整除,求a,b的值
答
设2x^4-x^3+ax^2+3x+b=(x^2-2x+2)(2x²+mx+b/2)则2x^4-x^3+ax^2+3x+b=(x^2-2x+2)(2x²+mx+b/2)2x^4-x^3+ax^2+3x+b=2x^4+mx^3-4x^3+b/2x^2-2mx^2+4x²-bx++2mx+b2x^4-x^3+ax^2+3x+b=2x^4+(m-4)...