①(x的四方方)³+(x³)的四次方-2(x²)的六次方②3a³a四次方+2a乘a的²乘a的四次方-4a的五次方乘(-a)²③(-x²y的5次方)/(-x²y)立方④若x=2,y=2分之一,求(x-y
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![①(x的四方方)³+(x³)的四次方-2(x²)的六次方②3a³a四次方+2a乘a的²乘a的四次方-4a的五次方乘(-a)²③(-x²y的5次方)/(-x²y)立方④若x=2,y=2分之一,求(x-y](/uploads/image/z/325086-6-6.jpg?t=%E2%91%A0%EF%BC%88x%E7%9A%84%E5%9B%9B%E6%96%B9%E6%96%B9%EF%BC%89%26%23179%3B%2B%EF%BC%88x%26%23179%3B%EF%BC%89%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9-2%EF%BC%88x%26%23178%3B%EF%BC%89%E7%9A%84%E5%85%AD%E6%AC%A1%E6%96%B9%E2%91%A13a%26%23179%3Ba%E5%9B%9B%E6%AC%A1%E6%96%B9%2B2a%E4%B9%98a%E7%9A%84%26%23178%3B%E4%B9%98a%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9-4a%E7%9A%84%E4%BA%94%E6%AC%A1%E6%96%B9%E4%B9%98%EF%BC%88-a%EF%BC%89%26%23178%3B%E2%91%A2%EF%BC%88-x%26%23178%3By%E7%9A%845%E6%AC%A1%E6%96%B9%EF%BC%89%2F%EF%BC%88-x%26%23178%3By%EF%BC%89%E7%AB%8B%E6%96%B9%E2%91%A3%E8%8B%A5x%3D2%2Cy%3D2%E5%88%86%E4%B9%8B%E4%B8%80%2C%E6%B1%82%EF%BC%88x-y)
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①(x的四方方)³+(x³)的四次方-2(x²)的六次方②3a³a四次方+2a乘a的²乘a的四次方-4a的五次方乘(-a)²③(-x²y的5次方)/(-x²y)立方④若x=2,y=2分之一,求(x-y
①(x的四方方)³+(x³)的四次方-2(x²)的六次方
②3a³a四次方+2a乘a的²乘a的四次方-4a的五次方乘(-a)²③(-x²y的5次方)/(-x²y)立方④若x=2,y=2分之一,求(x-y)乘(x²+xy+y²)的值要过程和答案~
①(x的四方方)³+(x³)的四次方-2(x²)的六次方②3a³a四次方+2a乘a的²乘a的四次方-4a的五次方乘(-a)²③(-x²y的5次方)/(-x²y)立方④若x=2,y=2分之一,求(x-y
①=x^12+x^12-2x^12=0
②=3a^7+2a^7-4a^7=a^7
③=x^2y^5/x^6y^3=y^2/x^4
④=(2-1/2)[(2+1/2)^2-2*1/2]=3/2*21/4=63/8
楼上正解
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