20. * * * * * Sort of. ± 20 are the square roots (not rout!) of 400.
Nine :) * * * * * Sort of. ± 9 are the square roots (not rout!) of 400.
0.0625 has a grand total of 2 square roots, and they're both real. They are +0.25 and -0.25
300
-20 20
-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.
There are no real square roots of -256. But using complex numbers the square roots of -256 are 16i and -16i.
0.0625 has a grand total of 2 square roots, and they're both real. They are +0.25 and -0.25
300
-20 20
There are two roots, both real: -13 and +13