if x is equal to the square root of 81 then x is ±9 (plus or minus 9)
Chat with our AI personalities
The square root of 81 is 9. 9 x 9 = 81.
Square roots can be positive or negative. 9 x 9 = 81 -9 x -9 = 81 9 is the positive square root of 81.
Gee, I don't know. Let's check it out. If it is, then 18 x 18 = 81 . 18 x 18 = 324 Nope. 18 x 18 is not 81, so 18 is not a square root of 81.
The square root of 81 is 9 as in 9 x 9 = 81
that makes no sense if you mean square root to the power 2 its equal: the number in the root (let it =x) in absolute value then its equal=: x or -x im not sure