The number square root of 21 is rational or irrational because?

Reponses
It is a decimal that repeats.
it is a decimal that terminates
it is a square root of a perfect square
it is a decimal that doesn't repeat or terminate

it is a square root of a non perfect square

1 answer

The number square root of 21 is irrational because it is a square root of a non-perfect square.
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