X3 +5X -6
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X3+5X-6X3+5X-6X3+5X-6(x^3-1)+5x-6+1=(x^3-1)+5x-5=(x^3-1)+5(x-1)=(x-1)(x^2+x+1)+5(x-1)=(x-1)(x^2+x+6)
X3 +5X -6
X3 +5X -6
X3 +5X -6
(x^3-1)+5x-6+1
=(x^3-1)+5x-5
=(x^3-1)+5(x-1)
=(x-1)(x^2+x+1)+5(x-1)
=(x-1)(x^2+x+6)
X3 +5X -6
=X3-X2+X2-X+6X-6
=(X-1)(X2+X+6)
X3 +5X -6
=8X-6
=2*4X-2*3
=2*(4X-3)
原式=x^3—x+6x—6=x(x+1)(x—1)+6(x—1)=(x—1){x(x+1)+6}.
X3 +5X -6
x3+5x-6
x3+5x+6因式分解
x4-x3-5x2-6x-4
x3-7x+6
6x+5x2-3x3+2x-7x3,其中x=-5
1.证明（8-7x-6x2+x3）+(x3+5x2+4x-1)-(-x2-3x+2x3-3)的值与x无关.快,
求证:无论X取何值下列（8-7X-6X2+X3)+(X3+5X2+4X-1)-(-X2-3X+2X3-3)结果不变
(3X3+5X2+X)/(7X3+5X-4)
x3+x+2 x3-4x2-4x-5 因式分解
因式分解：x3-7x+6
解方程x3-x2-5x+6=0x3是x的三次方,x2是x的平方
减去-2x等于6x2+3X-9的代数式是（ ）A.6X3-9 B.6X3+5X-9 C.-6X3-5X+9 D.6X3+X-9
x4+5x3+5x2+5x-6=0
因式分解：x4+x3+6x2+5x+5
(-2/1)X3/4除(-5/4)X(-6/5)
x4-x3-5x2-6x-4分解因式
x^2+5xy+6y^2+x3因式分解