It is +/- 4*sqrt(5)
(Square root of 5) times 4
Square root of 81
21/80 is already in its simplest form
square root of 125/80 = 1.25 or 5/4
√80 = 8.94427191
16
No, the square root of 6400 is 80, and 3200 squared is 10240000.
9/80 is in its simplest form.
17/80 is in its simplest form.
They are +/- 4*sqrt(5).
√6400 = 80* * * * *OR -80