Question

1/2√5-√3 rationalise denominator ​

Answer 1

Answer:

rationalise denominator ​ = 11

Step-by-step explanation:

1/2√5-√3

for rationalising denominator, multiply 2√5+√3

therefore;

2√5+√3 / 11

Answer 2

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$\frac{1}{2 \sqrt{5} - 3} \\ \\ = \frac{1}{2 \sqrt{5} - 3} \times \frac{2 \sqrt{5} + 3 }{2 \sqrt{5} + 3} \\ \\ = \frac{2 \sqrt{5} + 3}{(2 \sqrt{5) {}^{2} } - (3) {}^{2} } \\ \\ = \frac{2 \sqrt{5} + 3}{20 - 3} \\ \\ = \frac{2 \sqrt{5} + 3}{17} \: \: answer$

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