数学分式通分与约分约分 (x²+xy)/(x+y)² x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y² x-y/2x+2y与xy/(x+y)²
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数学分式通分与约分约分(x²+xy)/(x+y)²x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y&su
数学分式通分与约分约分 (x²+xy)/(x+y)² x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y² x-y/2x+2y与xy/(x+y)²
数学分式通分与约分
约分 (x²+xy)/(x+y)²
x²-y²/(x²-y²)
通分2xy/(x+y)²与x/x²-y²
x-y/2x+2y与xy/(x+y)²
数学分式通分与约分约分 (x²+xy)/(x+y)² x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y² x-y/2x+2y与xy/(x+y)²
约分
(x²+xy)/(x+y)²
=x(x+y)/(x+y)²
=x/(x+y)
x²-y²/(x²-y²)=1
通分
2xy/(x+y)²与x/x²-y²
2xy/(x+y)²=2xy(x-y)/[(x+y)²(x-y)]
x/(x²-y²)=x(x+y)/[(x+y)²(x-y)]
x-y/2x+2y与xy/(x+y)²
(x-y)/(2x+2y)=(x-y)(x+y)[2(x+y)²]=(x²-y²)/[2(x+y)²]
xy/(x+y)²=2xy/[2(x+y)²]
你那个是2次方还是Z?
数学分式通分与约分约分 (x²+xy)/(x+y)² x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y² x-y/2x+2y与xy/(x+y)²
分式的约分与通分问题约分 (x²+xy)/(x+y)² x²-y²/(x²-y²)通分2xy/(x+y)²与x/x²-y² x-y/2x+2y与xy/(x+y)²
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