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由a^2+b^2-6ab=0可知a^2+b^2=6ab則(a+b)^2 /(b-a)^2等於(a^2+b^2+2ab)/(b^2+a^2-2ab)等於(6ab+2ab)/(6ab-2ab)=8ab/4ab =2 希望對你有幫助,祝你學習進步
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