1.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+200220021.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002)
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![1.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+200220021.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002)](/uploads/image/z/6971103-63-3.jpg?t=1.x-y%3D16%2Cxy%3D6%2C%E6%B1%823x%26%23178%3By-6xy%26%23178%3B%2B18y%2B62.%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E8%AE%A1%E7%AE%97%282001%2B20012001%2B200120012001%29%C3%B7%282002%2B20022002%2B200220021.x-y%3D16%2Cxy%3D6%2C%E6%B1%823x%26%23178%3By-6xy%26%23178%3B%2B18y%2B62.%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E8%AE%A1%E7%AE%97%282001%2B20012001%2B200120012001%29%C3%B7%282002%2B20022002%2B20022002%29)
1.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+200220021.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002)
1.x-y=16,xy=6,求3x²y-6xy²+18y+6
2.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002
1.x-y=16,xy=6,求3x²y-6xy²+18y+6
2.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002)
1.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+200220021.x-y=16,xy=6,求3x²y-6xy²+18y+62.用因式分解计算(2001+20012001+200120012001)÷(2002+20022002+20022002)
把xy=6代入3x²y-6xy²+18y+6=18x-36y+18y+6=18x-18y+6=18*16+6=294
(2001+20012001+200120012001)=2001(1+10001+100010001)
(2002+20022002+200220022002)=2002((1+10001+100010001)
(2001+20012001+200120012001)÷(2002+20022002+200220022002)=2001÷2002