两道初三数学填空题!1.已知a是方程x^2-5x+1=0的一个根,那么a^4+a^-4的末位数字是( )2.设实数a,b满足a^2=2-2a,b^2=2-2b,则b/a^2+a/b^2=( )拜托给下步骤...谢谢喽~
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![两道初三数学填空题!1.已知a是方程x^2-5x+1=0的一个根,那么a^4+a^-4的末位数字是( )2.设实数a,b满足a^2=2-2a,b^2=2-2b,则b/a^2+a/b^2=( )拜托给下步骤...谢谢喽~](/uploads/image/z/5465098-10-8.jpg?t=%E4%B8%A4%E9%81%93%E5%88%9D%E4%B8%89%E6%95%B0%E5%AD%A6%E5%A1%AB%E7%A9%BA%E9%A2%98%211.%E5%B7%B2%E7%9F%A5a%E6%98%AF%E6%96%B9%E7%A8%8Bx%5E2-5x%2B1%3D0%E7%9A%84%E4%B8%80%E4%B8%AA%E6%A0%B9%2C%E9%82%A3%E4%B9%88a%5E4%2Ba%5E-4%E7%9A%84%E6%9C%AB%E4%BD%8D%E6%95%B0%E5%AD%97%E6%98%AF%EF%BC%88++%EF%BC%892.%E8%AE%BE%E5%AE%9E%E6%95%B0a%2Cb%E6%BB%A1%E8%B6%B3a%5E2%3D2-2a%2Cb%5E2%3D2-2b%2C%E5%88%99b%2Fa%5E2%2Ba%2Fb%5E2%3D%28+++%EF%BC%89%E6%8B%9C%E6%89%98%E7%BB%99%E4%B8%8B%E6%AD%A5%E9%AA%A4...%E8%B0%A2%E8%B0%A2%E5%96%BD%7E)
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