1.设a,b,c是三角形的三条边,且a³-b³=a²b-ab²+ac²-bc²,则这个三角形是( )A等腰 B直角 C等腰直角 D等腰或直角2.已知矩形的周长为16厘米,它的两边长a,b是整数,满足a-b-a²+2ab-b&s
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![1.设a,b,c是三角形的三条边,且a³-b³=a²b-ab²+ac²-bc²,则这个三角形是( )A等腰 B直角 C等腰直角 D等腰或直角2.已知矩形的周长为16厘米,它的两边长a,b是整数,满足a-b-a²+2ab-b&s](/uploads/image/z/7650991-55-1.jpg?t=1.%E8%AE%BEa%2Cb%2Cc%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E4%B8%89%E6%9D%A1%E8%BE%B9%2C%E4%B8%94a%26sup3%3B-b%26sup3%3B%3Da%26sup2%3Bb-ab%26sup2%3B%2Bac%26sup2%3B-bc%26sup2%3B%2C%E5%88%99%E8%BF%99%E4%B8%AA%E4%B8%89%E8%A7%92%E5%BD%A2%E6%98%AF%EF%BC%88+%29A%E7%AD%89%E8%85%B0+B%E7%9B%B4%E8%A7%92+C%E7%AD%89%E8%85%B0%E7%9B%B4%E8%A7%92+D%E7%AD%89%E8%85%B0%E6%88%96%E7%9B%B4%E8%A7%922.%E5%B7%B2%E7%9F%A5%E7%9F%A9%E5%BD%A2%E7%9A%84%E5%91%A8%E9%95%BF%E4%B8%BA16%E5%8E%98%E7%B1%B3%2C%E5%AE%83%E7%9A%84%E4%B8%A4%E8%BE%B9%E9%95%BFa%2Cb%E6%98%AF%E6%95%B4%E6%95%B0%2C%E6%BB%A1%E8%B6%B3a-b-a%26sup2%3B%2B2ab-b%26s)
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