Square Root of 99 Simplified

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Simplify the square root of

What is the square root of 99 simplified?

Answer

√99 = 3√11

99 = 9 × 11, and 9 = 3² is the largest perfect square that divides 99, so √99 = √9 × √11 = 3√11. Check: 3√11 ≈ 9.95, the same as √99 ≈ 9.95.

Simplifying √99 Step by Step

1. Prime factorization. — All Prime Factors of 99:

99 = 3 × 3 × 11 = 32 × 11

2. Pair up equal primes. Each pair is a perfect square and comes out of the root as one factor; a prime without a partner stays under the radical.

Prime factorTimes in 99Comes out of the rootStays under the root
323—
111—11

3. Take the pairs out of the root.

√99 = √((3 × 3) × 11)

= 3 × √11

= 3√11

4. Check by squaring back.

3² × 11 = 9 × 11 = 99

See Also

Simplify Square Root Calculator

This calculator writes a square root in simplest radical form: it finds the largest perfect square that divides the number, takes its root out of the radical and leaves the rest under it. For example, it can help you find out what is the square root of 99 simplified? (The answer is: 3√11). Enter a whole number (e.g. '99') and hit the 'Simplify' button.

FAQ

What is the square root of 99 simplified?

√99 = 3√11

Is 99 a perfect square?

No. 99 = 9 × 11: its largest perfect square factor is 9 = 3², and the factor 11 stays under the radical, so √99 = 3√11.

What is √99 as a decimal?

√99 ≈ 9.95. The decimal never ends and never repeats, so it is always rounded; the exact value is 3√11.

What is the largest perfect square that divides 99?

9 = 3². Dividing gives 99 ÷ 9 = 11, and 11 has no square factor left, so √99 = √9 × √11 = 3√11.