Question

Please solve...urgent

Answer 1

Step-by-step explanation:

$\frac{7}{3 \sqrt{5} - 2 } - \frac{2}{3 \sqrt{5} + 2} \\ = \frac{7(3 \sqrt{5} + 2) - 2(3 \sqrt{5} - 2)}{(3 \sqrt{5} - 2)(3 \sqrt{5} + 2)} \\ = \frac{21 \sqrt{5} + 14 - 6 \sqrt{5} + 4 }{ {(3 \sqrt{5} )}^{2} - {(2)}^{2} } \\ = \frac{15 \sqrt{5} + 18 }{(9 \times 5) - 4} \\ = \frac{15 \sqrt{5} + 18 }{45 - 4} \\ \frac{15 \sqrt{5} + 18 }{41}$