
Kathy M. answered 07/24/17
Tutor
5
(13)
High School Math Teacher 9+years
the square root is the inverse of the square
a number squared is number multiplied by itself:
12 = 1x1 = 1
22 = 2x2 = 4
32 = 3x3 = 9
...
n2 = nxn = perfect square
a square root is the inverse of this
√1 = √(1x1) = 1
√4 = √(2x2) = 2
√9 = √(3x3) = 3
...
√n2 = √(nxn) = square root
so,
√49 = √(? x ? )= ?
Mark M.
07/25/17