Exponential and Logarithmic Functions - Solving Exponential Equations Using Substitution
Exponential and Logarithmic Functions - Solving Exponential Equations Using Substitution
Secondary 3
Use an appropriate substitution, or otherwise, solve \({{7}^{2x+1}}+20\left( {{7}^{x}} \right)=3\).
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Answer:\(x=-1\)
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