计算:1、(-2xy²)(3x²y)²2、(-a)²(2-3ab)3.(x+2y
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计算:
1、(-2xy²)(3x²y)²
2、(-a)²(2-3ab)
3.(x+2y)(2x-y)
4.(a-2b)(a+2b)
5.(2a+1)²
1、(-2xy²)(3x²y)²
2、(-a)²(2-3ab)
3.(x+2y)(2x-y)
4.(a-2b)(a+2b)
5.(2a+1)²
![计算:1、(-2xy²)(3x²y)²2、(-a)²(2-3ab)3.(x+2y](/uploads/image/z/16497637-61-7.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A1%E3%80%81%EF%BC%88-2xy%26sup2%3B%EF%BC%89%283x%26sup2%3By%29%26sup2%3B2%E3%80%81%EF%BC%88-a%29%26sup2%3B%282-3ab%293.%28x%2B2y)
1.-18x5y4
2.2a2-3a3b
3.2x2-xy+4xy-2y2 =2x2+3xy-2y2
4.a2-4b2
5.4a2+4a+1
2.2a2-3a3b
3.2x2-xy+4xy-2y2 =2x2+3xy-2y2
4.a2-4b2
5.4a2+4a+1
计算:(1).(-2xy²)*(3x²y)²
计算:3(2x²-3xy²)-2(2xy²-3x²y)
1-x²+2xy-y²
化简:1.2x²-y²+(2y²-3x²)-(2y²+x²)
例如:a²+b²-c²-4d²-2ab+4cd x²+2xy+y&su
|x+2y+3|+(2x+y)²=0求x²-xy+y²
因式分解 x²-3xy+2y²+x-2
已知x/y=3,求x²+2xy-3y²/x²-2xy+y²
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
x/y=2,求分式x²-xy+3y²/x²+xy+6y²
方程组{x²+y²=10(1)x²-3xy+2y²=0(2)怎么解
越快越好(1)(xy²+3)(xy²+3)-2x(-x+y)(2)(x+2)(x²+4)(