2mn/4m²-9与2m-3/2m+3通分要过程
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![2mn/4m²-9与2m-3/2m+3通分要过程](/uploads/image/z/3652529-41-9.jpg?t=2mn%2F4m%26%23178%3B-9%E4%B8%8E2m-3%2F2m%2B3%E9%80%9A%E5%88%86%E8%A6%81%E8%BF%87%E7%A8%8B)
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2mn/4m²-9与2m-3/2m+3通分要过程
2mn/4m²-9与2m-3/2m+3通分要过程
2mn/4m²-9与2m-3/2m+3通分要过程
4m²-9=(2m+3)(2m-3)
所以
2mn/4m²-9=2mn/(4m²-9)
2m-3/2m+3=(2m-3)²/(4m²-9)