已知单项式M、N满足3x(M-5x)=6x²y²+N,则MN=()一步一步说
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![已知单项式M、N满足3x(M-5x)=6x²y²+N,则MN=()一步一步说](/uploads/image/z/989462-38-2.jpg?t=%E5%B7%B2%E7%9F%A5%E5%8D%95%E9%A1%B9%E5%BC%8FM%E3%80%81N%E6%BB%A1%E8%B6%B33x%EF%BC%88M-5x%EF%BC%89%3D6x%26sup2%3By%26sup2%3B%2BN%2C%E5%88%99MN%3D%EF%BC%88%EF%BC%89%E4%B8%80%E6%AD%A5%E4%B8%80%E6%AD%A5%E8%AF%B4)
已知单项式M、N满足3x(M-5x)=6x²y²+N,则MN=()一步一步说
已知单项式M、N满足3x(M-5x)=6x²y²+N,则MN=()
一步一步说
已知单项式M、N满足3x(M-5x)=6x²y²+N,则MN=()一步一步说
3x(M-5x)=6x²y²+N
3xm-15x²=6x²y²+N
所以3xm=6x²y²,-15x²=N
即M=3xy²,N=-15x²
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