| Exam Board | Edexcel |
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| Module | AEA (Advanced Extension Award) |
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| Year | 2015 |
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| Session | June |
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| Topic | Roots of polynomials |
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2．（a）Show that \(( x + 1 )\) is a factor of \(2 x ^ { 3 } + 3 x ^ { 2 } - 1\)
（b）Solve the equation
（b）Solve the equation
$$\sqrt { x ^ { 2 } + 2 x + 5 } = x + \sqrt { 2 x + 3 }$$