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By displaying all required working, solve $5^{2x} = 5^x + 5$. Give the solution correct to 3 decimal places.
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: “State or show $u^2 = u + 5$, or the same relation in $5^x$” …
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