已知(2x)³·(-3xy²)=-24x的m次方y的n次方,则m-n=(-3分之1)的-2次方+(9分之1)的0次方+(-5)³÷(-5)²,(-3x³)²·x³+(-4x)²·x的7次方-(5x³)²,(m-2n)(m+2n)-(-m+n)²,9(x-2y)²-4(x+2y
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![已知(2x)³·(-3xy²)=-24x的m次方y的n次方,则m-n=(-3分之1)的-2次方+(9分之1)的0次方+(-5)³÷(-5)²,(-3x³)²·x³+(-4x)²·x的7次方-(5x³)²,(m-2n)(m+2n)-(-m+n)²,9(x-2y)²-4(x+2y](/uploads/image/z/2831159-47-9.jpg?t=%E5%B7%B2%E7%9F%A5%282x%29%26%23179%3B%C2%B7%28-3xy%26%23178%3B%29%3D-24x%E7%9A%84m%E6%AC%A1%E6%96%B9y%E7%9A%84n%E6%AC%A1%E6%96%B9%2C%E5%88%99m%EF%BC%8Dn%EF%BC%9D%28-3%E5%88%86%E4%B9%8B1%29%E7%9A%84-2%E6%AC%A1%E6%96%B9%2B%289%E5%88%86%E4%B9%8B1%29%E7%9A%840%E6%AC%A1%E6%96%B9%2B%28-5%29%26%23179%3B%C3%B7%28-5%29%26%23178%3B%2C%28-3x%26%23179%3B%29%26%23178%3B%C2%B7x%26%23179%3B%2B%28-4x%29%26%23178%3B%C2%B7x%E7%9A%847%E6%AC%A1%E6%96%B9-%285x%26%23179%3B%29%26%23178%3B%2C%28m-2n%29%28m%2B2n%29-%28-m%2Bn%29%26%23178%3B%2C9%28x-2y%29%26%23178%3B-4%28x%2B2y)
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已知(2x)³·(-3xy²)=-24x的m次方y的n次方,则m-n=(-3分之1)的-2次方+(9分之1)的0次方+(-5)³÷(-5)²,(-3x³)²·x³+(-4x)²·x的7次方-(5x³)²,(m-2n)(m+2n)-(-m+n)²,9(x-2y)²-4(x+2y
已知(2x)³·(-3xy²)=-24x的m次方y的n次方,则m-n=
(-3分之1)的-2次方+(9分之1)的0次方+(-5)³÷(-5)²,(-3x³)²·x³+(-4x)²·x的7次方-(5x³)²,
(m-2n)(m+2n)-(-m+n)²,9(x-2y)²-4(x+2y)²,4x-16x³,x²(a-b)+9(b-a)
已知(2x)³·(-3xy²)=-24x的m次方y的n次方,则m-n=(-3分之1)的-2次方+(9分之1)的0次方+(-5)³÷(-5)²,(-3x³)²·x³+(-4x)²·x的7次方-(5x³)²,(m-2n)(m+2n)-(-m+n)²,9(x-2y)²-4(x+2y
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