3x(M-5x)=6x²y³+N,求M与N分别等于几
问题描述：
3x(M-5x)=6x²y³+N,求M与N分别等于几
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答
3x(M-5x)=6 * x^2 * y^3 + N
3 * x * M - 15 * x^2 = 6 * x^2 * y^3 + N
对比左右两边
M = 2 * x * y^3
N = -15 * x^2