约分,急① X³-2X²Y/X²-2XY²②a²-(b-c)²
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约分,急
① X³-2X²Y/X²-2XY²
②a²-(b-c)²/(a+b)²-c²
① X³-2X²Y/X²-2XY²
②a²-(b-c)²/(a+b)²-c²
![约分,急① X³-2X²Y/X²-2XY²②a²-(b-c)²](/uploads/image/z/17575737-33-7.jpg?t=%E7%BA%A6%E5%88%86%2C%E6%80%A5%E2%91%A0+X%26sup3%3B-2X%26sup2%3BY%2FX%26sup2%3B-2XY%26sup2%3B%E2%91%A1a%26sup2%3B-%EF%BC%88b-c%EF%BC%89%26sup2)
1)(X^2-2XY)*x/(X-2Y2)*X 消 x
2)a-b+c/a+b+c
2)a-b+c/a+b+c
例如:a²+b²-c²-4d²-2ab+4cd x²+2xy+y&su
先化简,再求值:3xy²(-x²y+2x³y²)-4xy(-xy²)·
1-x²+2xy-y²
x³y³-x²y²-xy+1
计算:(1).(-2xy²)*(3x²y)²
因式分解:m³-2m²-4m+8;x²-2xy+y²-9
12x²+4x-1 x²-(a+b)xy+aby² xy-1+x-y x²-(2
数学分式约分约分这个分式:x³y-xy³/x³-2x²y+y²x(有步
数学分式通分与约分约分 (x²+xy)/(x+y)² x²-y²/(x²
3a-3b/10ab*25a²b³/a²-b² x²-4y²
分解因式 x²(x²-y²)+z²(y²-x²) (a+b)
x²-4y²/x²+2xy+y²÷x+2y/2x²+2xy