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Solve the equation $3^{2x} - 7(3^x) + 10 = 0$, and give your answers correct to $3$ significant figures.
Mathematics 9709 · AS & A Level · Logarithmic and exponential functions
Logarithmic and exponential functions — practice question
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Apply a recognisable method for solving a quadratic in $3^x$” …
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