己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求 b/a十a/b的值,
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己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求b/a十a/b的值,己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求b/a十a/b的值,己知实数a,b分别满
己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求 b/a十a/b的值,
己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求 b/a十a/b的值,
己知实数a,b分别满足a一6a十4=0,b一6a十4=0,且a≠b,求 b/a十a/b的值,
a+b=6
ab=4
b/a+a/b
=(a^2+b^2)/(ab)
=(a^2+b^2+2ab)/(ab)-2
=(a+b)^2/(ab)-2
=6^2/4-2
=9-2
=7
选为满意答案哦
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