Question

simplify by rationalizing denominator 7+3√5/7-3√5

Answer 1

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

Multiplying both numerator and denominator with numerator
$\frac{(7+3 \sqrt{5})^{2}}{(7-3 \sqrt{5})*(7+3 \sqrt{5})}$
$\frac{49+45+42 \sqrt{5} }{49-45}$
$\frac{94+ 42 \sqrt{5} }{4}$
$\frac{47+21 \sqrt{5} }{2}$

Answer 2

This is a great answer it is 9th class used