9 is the value of -3 squared
212 =441
Seems to us that any value at all can be squared.
I find the value of six squared by multiplying 6 by itself.I got my answer by explaining in words how I find the value of 6 squared.
The prime factors of 21 are 3 x 7, so the prime factors of 21 squared are 32 x 72. The factors of 21 squared are 1, 3, 7, 9, 21, 49, 63, 147, and 441.
3a squared b squared
21 km squared
102 or 100
20 squared is 20 x 20 or 400.
3 squared is 3 x 3 or 9.
25 squared is 25 x 25 or 625.
20 squared is 20 x 20 or 400.