Question

rationalize denominators
1. 1/√5
2. 1/√7
3. 1/√2
please help these solutions

Answer 1

2. $\frac{1}{ \sqrt{5} } = \frac{1 \times \sqrt{5} }{ \sqrt{5} \times \sqrt{5} } \\ = \frac{ \sqrt{5} }{5}$
3. $\frac{1}{ \sqrt{7} } = \frac{1 \times \sqrt{7} }{ \sqrt{7} \times \sqrt{7} } \\ \frac{ \sqrt{7} }{7}$

$\frac{1}{ \sqrt{2} } = \frac{1 \times \sqrt{2} }{ \sqrt{2} \times \sqrt{2} } \\ = \frac{ \sqrt{2} }{2}$HOPE THIS WILL HELP UHHH

Answer 2

$1 \div \sqrt{5} \times \sqrt{5} \div \sqrt{5 } = \sqrt{5}$

root 5 cancel with root 5.Others are also same as it