作业帮X^2-8y^2-2xy-2x+26y-15的因式分解
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X^2-8y^2-2xy-2x+26y-15的因式分解
X^2-8y^2-2xy-2x+26y-15的因式分解
X^2-8y^2-2xy-2x+26y-15的因式分解
x^2-8y^2-2xy-2x+26y-15
=x^2-2xy+y^2-9y^2+18y-9-2x+8y-6
=(x^2-2xy+y^2)-(9y^2-18y+9)-(2x-8y+6)
=(x-y)^2-(3y-3)^2-2(x-4y+3)
=[(x-y)+(3y-3)][(x-y)-(3y-3)]-2(x-4y+3)
=(x+2y-3)(x-4y+3)-2(x-4y+3)
=(x+2y-3-2)(x-4y+3)
=(x+2y-5)(x-4y+3)
(-x-y)(x^2+xy+y^2)
化简x^-y^/x^-2xy+y^
2*(x-y)²(y-x)(xy)
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(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
.(x+y-2)(x+y-2xy)+(xy-1)^2
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代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy
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