How do you solve this problem ?
√X=9
The square root of some number is 9. What's the number?
If X is positive:
(√X)^2 = X
We can square both sides:
(√X)^2 = (9)^2
X = 81
X=81
9 is the square root of 81 so x has to be 81
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Verified answer
√X=9
The square root of some number is 9. What's the number?
If X is positive:
(√X)^2 = X
We can square both sides:
(√X)^2 = (9)^2
X = 81
X=81
9 is the square root of 81 so x has to be 81