Question

What is square root of 100?

Answer 1

sr(100) = 10 because, by convention, we only refer to the positive root.
If the question was solve x^2 = 100 then there are two possible values for x. +10 and -10

Answer 2

± 10

Explanation:

sqrt(100)

What number multiplied by itself is 100

10*10 =100

(-10)*(-10) = 100

The square root of 100 is ± 10