What is the value of \(7^{2 x}\) in \(7^{4 x}-7\left(\frac{10 A}{11}\right)^{2 x+1}-960=0\) if \(...

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What is the value of \(7^{2 x}\) in \(7^{4 x}-7\left(\frac{10 A}{11}\right)^{2 x+1}-960=0\) if \(...
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