Question

Rationalise the denominators of the following
1/√7​

Answer 1

Answer:

on rationalizing 1/√7 becomes √7/7

Step-by-step explanation:

$\frac{1}{ \sqrt{7} }$

multiply √7 on both numerator and denominator.

$\frac{1}{ \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } = \frac{ \sqrt{7} }{ \sqrt{7} \times \sqrt{7} } = \frac{ \sqrt{7} }{7 }$

Tip: rationalising basically means to remove roots from the denominator of a fraction.

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Answer 2

we need to rationalise that remove root from denominator ,hence multiplying and dividing by root 7

1/root 7

=1/root 7 ×root 7 /root 7

=root 7 /(root 7 )^

=root 7 /7