January 2020 2 178 Report
Sendo a e b dois números reais diferentes de zero, a expressão: \dfrac{1}{a^2}+\dfrac{2}{ab}


A) \dfrac{1}{a^2b}
B) \dfrac{3}{a^2b}
C) \dfrac{b+2a}{a^2b}
D) \dfrac{b+2a}{a(a+b)}
E) \dfrac{a+b}{b}
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