Question

(2) What would be the denominator after nationalizing
7/5√3-5√2
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Answer 1

Answer:

$\frac{7}{5 \sqrt{3} - 5 \sqrt{2}} \times \frac{5 \sqrt{3} + 5 \sqrt{2} }{5 \sqrt{3} + 5 \sqrt{2} }$

$\frac{7(5 \sqrt{3} + 5 \sqrt{2})}{75 - 50}$

$\frac{7(5 \sqrt{3} + 5 \sqrt{2})}{25}$

So, the denominator is 25 after rationalizing.