√196 is rational.
√196 = √(14^2) = 14 - a whole number which is also a rational number.
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196 = 14² → √196 is rational.
The square root of 196 is 14.
The square root of 196 is 14.
sqrt(-196) = 14i where i is the imaginary square root of -1.
Square root of 10 is irrational.