(x+y)^3-x^3-y^3+3xy因式分解
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(x+y)^3-x^3-y^3+3xy因式分解
(x+y)^3-x^3-y^3+3xy因式分解
(x+y)^3-x^3-y^3+3xy因式分解
(x+y)^3-x^3-y^3+3xy
=(x+y)^3-(x+y)(x²-xy+y²)+3xy
=(x+y)(x²+2xy+y²-x²+xy-y²)+3xy
=3xy(x+y)+3xy
=3xy(x+y+1)
=3xy(x+y)+3xy
=3xy(x+y+1)
-x-3xy+y
【x(xy-xy)-y(x-xy)】÷3xy
计算:[x(x²y²-xy)-y(x²-x³y)]/3xy
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化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
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