| Exam Board | Edexcel |
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| Module | C2 (Core Mathematics 2) |
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| Year | 2008 |
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| Session | June |
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| Topic | Exponential Equations & Modelling |
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4. (a) Find, to 3 significant figures, the value of \(x\) for which \(5 ^ { x } = 7\).
(b) Solve the equation \(5 ^ { 2 x } - 12 \left( 5 ^ { x } \right) + 35 = 0\).