Question

√7×√42=?
answer it fast​

Answer 1

Answer:

✓7 ×√42

=√7×√(7×6)

=√7×√7×√6

=7√6

Answer 2

Answer:

The attachment is tilted. please see it and try to understand!

Explanation:

For better understanding, I am explaining you in more details, do prime factorization of

$\sqrt{47}$

After doing so, you get factors:

$\sqrt{2} \sqrt{3} \sqrt{7 }$

After getting these 3 factors. Multiple these 3 factors with the remaining value and voila your question is done!