No, an irrational number is, in simple terms, a number that keeps repeating. The square root of 4 is positive or negative 2, which does not repeat and is therefore rational.
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The square root of 4 is 2 which is a rational number
The square root of 3 is an irrational number
Yes, the square root of 48 is an irrational number. This is because 48 can be simplified to (4 \times 12), and since the square root of 4 is a whole number (2), we can express (\sqrt{48}) as (2\sqrt{12}). The square root of 12, however, is not a perfect square and cannot be simplified to a whole number, making (\sqrt{48}) irrational.
The square root of 680 is an irrational number and it is about 26.0768 rounded to 4 decimal places
The square roots of 16 are +4 and -4. Both of them are rational numbers.