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Solve $|2^x - 7| = 1$, with answers stated correct to $2$ decimal places where needed.
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 imply the non-modular equation $(2^x-7)^2=1^2$, or the equivalent pair of equations” …
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