IP2U3 Exercise 1 Q20
IP2U3 Exercise 1 Q20
- Expand \({{\left( a+\frac{1}{a} \right)}^{2}}\).
- Given that \(a+\frac{1}{a}=7\), use your result in (a) to find the value of \({{a}^{2}}+\frac{1}{{{a}^{2}}}\).
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Answer:(a) \(a^2+2+\frac{1}{a^2}\) (b) \(47\)
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