x^2-y^2+6x-2y+8因式分解正确的话立刻采纳

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x^2-y^2+6x-2y+8因式分解正确的话立刻采纳

x^2-y^2+6x-2y+8因式分解正确的话立刻采纳
x^2-y^2+6x-2y+8因式分解
正确的话立刻采纳

x^2-y^2+6x-2y+8因式分解正确的话立刻采纳
(x+3)^2-(y+1)^2
=(x+y+4)(x-y+2)

=(x 3)²-(y 1)²

x^2-y^2+6x-2y+8
=x^2+6x+9-y^2-2y-1
=(x+3)^2-(y+1)^2
=(x+3-y-1)(x+3+y+1)
=(x-y+2)(x+y+4)

x^2-y^2+6x-2y+8
=x^2+6x+9-y^2-2y-1
=(x+3)^2-(y+1)^2
=[(x+3)-(y+1)][(x+3)+(y+1)]
=(x-y+2)(x+y+4)