Question

please help question is on attachment!!!!

Answer 1

rationlized the denominator

Answer 2

\[\frac{5}{6-4\sqrt{7}-8+5\sqrt{7}}\]

Answer 3

\[\frac{5}{-2+\sqrt{7}}\]

Answer 4

\[\frac{5}{-2+\sqrt{7}}\frac{-2-\sqrt{7}}{-2-\sqrt{7}}\]

Answer 5

\[\frac{-10-5\sqrt{7}}{4-7}\]

Answer 6

\[\frac{-10-5\sqrt{7}}{-3}\]

Answer 7

\[\frac{10+5\sqrt{7}}{3}\]