Answer it fast please

Dear Student,

We have, \frac{\sqrt{72}}{5 \sqrt{72} + 3 \sqrt{288} - 2 \sqrt{648}} = \frac{\sqrt{2 \times 2 \times 2 \times 3 \times 3}}{5 \sqrt{2 \times 2 \times 2 \times 3 \times 3} + 3 \sqrt{2 \times 2 \times 2 \times 2 \times 2 \times 3 \times 3} - 2 \sqrt{2 \times 2 \times 2 \times 3 \times 3 \times 3 \times 3}} = \frac{2 \times 3 \sqrt{2}}{5 \times 2 \times 3 \sqrt{2} + 3 \times 2 \times 2 \times 3 \sqrt{2} - 2 \times 2 \times 3 \times 3 \sqrt{2}} = \frac{6 \sqrt{2}}{30 \sqrt{2} + 36 \sqrt{2} - 36 \sqrt{2}} = \frac{6 \sqrt{2}}{30 \sqrt{2}} = \frac{1}{5}

Regards