Sometimes.
eg the irrational number √2 squared is 2 which is rational (2 = 2/1)
eg the irrational number √(√2) squared is √2 which is irrational.
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The square of a rational number can be either rational or irrational. However, the square of an irrational number is always irrational.
It is an irrational number
It is irrational.
irrational
irrational