Question

$\sqrt{1/9 + 1/7}$

Answer 1

Answer:

4/3√7

Step-by-step explanation:

√1/9 + 1/7

= √7/63 + 9/63

= √16/63

= 4/√63

= 4/√7 × √9

= 4/3√7

Answer 2

Answer:

$\sqrt{ \frac{1}{9} + \frac{1}{7} } \\ \\ \sqrt{ \frac{7 + 9}{63} } \\ \\ \sqrt{ \frac{16}{63} } \\ \\ \sqrt{ \frac{ {4}^{2} }{63} } \\ \\ \frac{4}{3 \sqrt{7} }$