Question

Please solve
Root 63 - root 7

Answer 1

Answer:

2√7

Step-by-step explanation:

Your question :-√63-√7

Solution :- √63 can be written as √9×√7

Therefore√63 = 3×√7

So the expression will be

3√7 - √7

=2√7

So your answer is 2√7.

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Answer 2

The answer is $2\sqrt{7}$.

Given: $\sqrt{63}$ - $\sqrt{7}$

To find: $\sqrt{63} - \sqrt{7} = ?$

Solution:

 We have, $\sqrt{63} - \sqrt{7}$

  We know, $\sqrt{63} = \sqrt{9 * 7}$

        ∵ $\sqrt{9} = 3$, ⇒ $\sqrt{63} = 3\sqrt{7}$

∴ $\sqrt{63} -\sqrt{7} = 3\sqrt{7} - \sqrt{7}$

                   $= 2\sqrt{7}$

The final answer is $2\sqrt{7}$.