Question

Rationalise this please help​

Answer 1

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$\frac{7 + 3 \sqrt{5} }{7 - 3 \sqrt{5} } \\ \\ = \frac{7 + 3 \sqrt{5} }{7 - 3 \sqrt{5} } \times \frac{7 + 3 \sqrt{5} }{7 + 3 \sqrt{5} } \\ \\ = \frac{(7 + 3 \sqrt{5) {}^{2} } }{49 - 45} \\ \\ = \frac{49 + 45 + 42 \sqrt{5} }{2} \\ \\ \frac{47 + 21 \sqrt{5} }{2} answer$

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Answer 2

Answer:

I hope this will help you