Question

Bob buys 20 watermelons...
He eats 10. If x=x, what is the square root of 49?

Answer 1

I know that the square root of 49 = 7 since 7 x 7 = 49. But the negative square root of 49 is -7.

Answer 2

A square root is a number which is multiplied by itself it equals the original number. Therefore 7x7= 49. 49 is the original number. The square root is 7