化简∶a/a-2b×√a²b-4ab²+4b³/a(0
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化简∶a/a-2b×√a²b-4ab²+4b³/a(0化简∶a/a-2b×√a²b-4ab²+4b³/a(0化简∶a/a-2b×√a
化简∶a/a-2b×√a²b-4ab²+4b³/a(0
化简∶a/a-2b×√a²b-4ab²+4b³/a(0
化简∶a/a-2b×√a²b-4ab²+4b³/a(0
=a/(a-2b)× √[b(a-2b)²/a]
=a/(a-2b) ×|a-2b|/a ×√(ab)
=-√(ab)