The two square roots of 400 are: 20 and -20.
20. * * * * * Sort of. ± 20 are the square roots (not rout!) of 400.
Nine :) * * * * * Sort of. ± 9 are the square roots (not rout!) of 400.
300
-20 20
0.0625 has a grand total of 2 square roots, and they're both real. They are +0.25 and -0.25
The real square roots of 400 are 20 and -20. This is because when you square both of these numbers, you get 400. In general, every positive real number has two square roots: one positive and one negative.
-15 15
20. * * * * * Sort of. ± 20 are the square roots (not rout!) of 400.
20 and -20
20
20 is one of the two square roots of 400.
They are -20 and +20.
Nine :) * * * * * Sort of. ± 9 are the square roots (not rout!) of 400.
The real square roots of 0.0049 are ±0.07. This is because the square root of a positive number has two real solutions: one positive and one negative. Thus, both 0.07 and -0.07 are the square roots of 0.0049.
There are no real square roots of -256. But using complex numbers the square roots of -256 are 16i and -16i.
300
-20 20