x2-y2-2y-1 因式分解

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x2-y2-2y-1因式分解x2-y2-2y-1因式分解x2-y2-2y-1因式分解原式=x^2-(y^2+2y+1)=x^2-(y+1)^2=(x-y-1)(x+y+1)这题的关键是怎样搭配,祝你开

x2-y2-2y-1 因式分解
x2-y2-2y-1 因式分解

x2-y2-2y-1 因式分解
原式=x^2-(y^2+2y+1)
=x^2-(y+1)^2
=(x-y-1)(x+y+1)
这题的关键是怎样搭配,祝你开心~O(∩_∩)O!
注：x^2表示x的二次方

x2-y2-2y-1
=x2-(y2+2y+1)
=x2-(y+1)2
=(x-y-1)(x+y+1)

=x2-(y2+2y+1)=x2-(y+1)2=(x+y+1)(x-y-1)

x2-y2-2y-1 因式分解 2x2+xy-3y2+x+4y-1因式分解因式分解：x3+（y-1）x2-2xy-y2 x2-3xy+2y2+y+1怎么因式分解 X2-3xy+2y2+y+1怎么因式分解 x2-2x+2y-y2因式分解因式分解x2+y2-xy-x-y+1 (x2-4y2)-(x+2y)因式分解因式分解(x2-y2)-(x-y)2快 2xy-x2+1-y2因式分解因式分解；x2[x-y]+y2[x-y]2是平方因式分解x2-4xy+4y2+x-2y-2 x2-4xy+4y2-x+2y-2因式分解 x2+2xy-3y2+3x+y+2 因式分解因式分解x2+2+y2-3x-2xy+3y x2+2xy-8y2+2x+8y因式分解 x2-xy-2y2-x+5y-2因式分解因式分解2y2-xy-3x2-2y+3x