1+1=?
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Khách
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10 tháng 3 2017
\(\frac{x^2}{x^4}=16\)
\(\Leftrightarrow\frac{1}{x^2}=16\)
\(\Leftrightarrow x^2=\frac{1}{16}\)
\(\Leftrightarrow x=\frac{1}{4}\) hoặc \(x=\frac{-1}{4}\)
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= nhai
2
tích