Correct Answer: Option B

Explanation

\(\frac{5+\sqrt{7}}{3+\sqrt{7}}=\frac{5+\sqrt{7}}{3+\sqrt{7}}\times \frac{3-\sqrt{7}}{3-\sqrt{7}}\\
=\frac{(5+\sqrt{7})(3-\sqrt{7})}{3^2 - \sqrt{7}^2}\\
=\frac{15-5\sqrt{7}+3\sqrt{7}-7}{9-7}\\
=\frac{8-2\sqrt{7}}{2}\)
Factorize then divide by 2
\(=\frac{2(4-\sqrt{7}}{2}\\
=4-\sqrt{7}\)

There is an explanation video available below.

• I got 26th on my examination slip how come u said it is on 24th? Answer this

  3 Answers   ·   Medical Science   ·   16 hours ago
• please can someone tell me about the major topics i should read for jamb? Answer this

  2 Answers   ·   Chemistry   ·   3 hours ago
• Hii, Waec would be starting on the 25th animal husbandry, in which I’m offering but I’m also writing Jamb on... Answer this

  2 Answers   ·   8 hours ago