已知实数a,b分别满足a^2+2a=2,b^2+2b=2,求(b/a)+(a/b)的值
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![已知实数a,b分别满足a^2+2a=2,b^2+2b=2,求(b/a)+(a/b)的值](/uploads/image/z/1721277-45-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0a%2Cb%E5%88%86%E5%88%AB%E6%BB%A1%E8%B6%B3a%5E2%2B2a%3D2%2Cb%5E2%2B2b%3D2%2C%E6%B1%82%28b%2Fa%29%2B%28a%2Fb%29%E7%9A%84%E5%80%BC)
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已知实数a,b分别满足a^2+2a=2,b^2+2b=2,求(b/a)+(a/b)的值
已知实数a,b分别满足a^2+2a=2,b^2+2b=2,求(b/a)+(a/b)的值
已知实数a,b分别满足a^2+2a=2,b^2+2b=2,求(b/a)+(a/b)的值
x^2+2x-2=0
ab=-2,a+b=-2
b/a+a/b=(a^2+b^2)/ab=(4+4)/(-2)=-4