DO you belive that falling in love at first sight? I didn't before,but I do now. When I saw her at first sight,I took her as my dreamboat. She stood in front of me like an angle. And I can't belive my eyes. She almost didn't look at me,but I didn't care. She was so gorgeous,and I stare at her all the time. However,I can't still wake up my nerve to tell her "I'm into you!".

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若x2-13x+1=0,則x2+1/x2=       {推甄}

(A)167

(B)169

(C)171

(D)173

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若t=x+1/x,則x4x3-4x2+x+1=0變成:  {推甄}

(A)x2(t2+t-2)=0

(B)x2(t2+t-3)=0

(C)x2(t2+t-4)=0

(D)x2(t2+t-6)=0

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