如图,在Rt△ABC中,∠C=90°,BC=acm,AC=bcm,a>b,且a,b是方程已知:如图,在Rt△ABC中,∠C=90°,BC=acm,AC=bcm,a>b,且a、b是方程x2–(m–1)x + (m+4)=0 的两根,当AB=5cm时,(1)求a和b;(2)若△A’B’C’ 和 △ABC完
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![如图,在Rt△ABC中,∠C=90°,BC=acm,AC=bcm,a>b,且a,b是方程已知:如图,在Rt△ABC中,∠C=90°,BC=acm,AC=bcm,a>b,且a、b是方程x2–(m–1)x + (m+4)=0 的两根,当AB=5cm时,(1)求a和b;(2)若△A’B’C’ 和 △ABC完](/uploads/image/z/6635591-71-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8Rt%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0C%3D90%C2%B0%2CBC%3Dacm%2CAC%3Dbcm%2Ca%3Eb%2C%E4%B8%94a%2Cb%E6%98%AF%E6%96%B9%E7%A8%8B%E5%B7%B2%E7%9F%A5%EF%BC%9A%E5%A6%82%E5%9B%BE%2C%E5%9C%A8Rt%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0C%3D90%C2%B0%2CBC%3Dacm%2CAC%3Dbcm%2Ca%EF%BC%9Eb%2C%E4%B8%94a%E3%80%81b%E6%98%AF%E6%96%B9%E7%A8%8Bx2%E2%80%93%28m%E2%80%931%29x+%2B+%28m%2B4%29%3D0+%E7%9A%84%E4%B8%A4%E6%A0%B9%2C%E5%BD%93AB%EF%BC%9D5cm%E6%97%B6%2C%EF%BC%881%EF%BC%89%E6%B1%82a%E5%92%8Cb%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5%E2%96%B3A%E2%80%99B%E2%80%99C%E2%80%99+%E5%92%8C+%E2%96%B3ABC%E5%AE%8C)
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