1、(3x+2y)²(2y-3x)²2、16-8x²+x^43、(3/4x²y-7y³+2/3x³-6xy²)-(x³-2y³- 1/4x²y)其中x=1,y=1/34、-a^6 ·(-a)^6 ·a³-a³【-a²(-a^4)²】p.s.3/4就是四分之
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![1、(3x+2y)²(2y-3x)²2、16-8x²+x^43、(3/4x²y-7y³+2/3x³-6xy²)-(x³-2y³- 1/4x²y)其中x=1,y=1/34、-a^6 ·(-a)^6 ·a³-a³【-a²(-a^4)²】p.s.3/4就是四分之](/uploads/image/z/1720231-7-1.jpg?t=1%E3%80%81%EF%BC%883x%2B2y%EF%BC%89%26%23178%3B%EF%BC%882y-3x%EF%BC%89%26%23178%3B2%E3%80%8116-8x%26%23178%3B%2Bx%5E43%E3%80%81%EF%BC%883%2F4x%26%23178%3By-7y%26%23179%3B%2B2%2F3x%26%23179%3B-6xy%26%23178%3B%EF%BC%89-%EF%BC%88x%26%23179%3B-2y%26%23179%3B-+1%2F4x%26%23178%3By%EF%BC%89%E5%85%B6%E4%B8%ADx%3D1%2Cy%3D1%2F34%E3%80%81-a%5E6+%C2%B7%EF%BC%88-a%EF%BC%89%5E6+%C2%B7a%26%23179%3B-a%26%23179%3B%E3%80%90-a%26%23178%3B%EF%BC%88-a%5E4%EF%BC%89%26%23178%3B%E3%80%91p.s.3%2F4%E5%B0%B1%E6%98%AF%E5%9B%9B%E5%88%86%E4%B9%8B)
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