Question

How do you find the square root of 49?

Answer 1

`sqrt49 = sqrt (7xx7) = sqrt 7^2 = 7`

Explanation:

The square root of a number is that number which, when multiplied by itself will equal the original number.

`4 xx 4 = 16 rArr 4^2 = 16` This means `sqrt16 = 4`

To find the square root of a number, find its prime factors.

`49 = 7xx7`

`sqrt49 = sqrt (7xx7) = sqrt 7^2 = 7`

(A square root can also be a negative number.)