通分(1)4m²-9分之2mn与2m+3分之2m-3

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通分(1)4m²-9分之2mn与2m+3分之2m-3通分(1)4m²-9分之2mn与2m+3分之2m-3通分(1)4m²-9分之2mn与2m+3分之2m-34m²

通分(1)4m²-9分之2mn与2m+3分之2m-3
通分(1)4m²-9分之2mn与2m+3分之2m-3

通分(1)4m²-9分之2mn与2m+3分之2m-3
4m²-9分之2mn=2mn/(4m²-9)
2m+3分之2m-3=(2m-3)²/(4m²-9)