5x-4/(x+1)(2x-1)=M/x-1-N/2x-1,试求M,N的值
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5x-4/(x+1)(2x-1)=M/x-1-N/2x-1,试求M,N的值
5x-4/(x+1)(2x-1)=M/x-1-N/2x-1,试求M,N的值
5x-4/(x+1)(2x-1)=M/x-1-N/2x-1,试求M,N的值
先把等式的右边同分,可以得到M(2x-1)-N(x-1),然后去括号、合并同类项得(2M-N)x-(M-N)所以有2M-N=5 M-N=4 解得M=1 N=-3
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