X的4次方减15乘X的平方加10X加24等于0
问题描述：
X的4次方减15乘X的平方加10X加24等于0
答
x^4-15x^2+10x+24=0x^4-15x^2+44+10x-20=0(x²-11)(x²-4)+10(x-2)=0(x+2)(x-2)(x²-11)+10(x-2)=0(x-2)(x³+2x²-11x-12)=0(x-2)[x(x+1)²-12(x+1)]=0(x-2)(x+1)(x²+x-12）=0(x-2)(x+...