| Exam Board | Edexcel |
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| Module | C1 (Core Mathematics 1) |
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| Topic | Indices and Surds |
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- Given that \(( 2 + \sqrt { } 7 ) ( 4 - \sqrt { 7 } ) = a + b \sqrt { } 7\), where a and \(b\) are integers,
- find the value of a and the value of \(b\).
Given that \(\frac { 2 + \sqrt { 7 } } { 4 + \sqrt { 7 } } = c + d \sqrt { 7 }\) where \(c\) and \(d\) are rational numbers, - find the value of \(c\) and the value of \(d\).