Q:
# What is the square root of 81?

**The square root of 81 is 9. ** However, if a student needs to solve the equation Â x^{2} = 81, then possible solutions can be either +9 or -9.

Because 81 is a perfect square, it is easy to find its square root. However, finding the square root of a number that is not a perfect square is more difficult. For example, the square root of 72 is 6 x √2. To find this answer, factor 72 into 2 x 36, all placed under the √ symbol, then factor out again as 2 x 6 x 6 (still under the √ symbol). As 36 is a perfect square, the 6s can be moved outside the √, resulting in the answer of 6√2.

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Q:
## What is the square root of 160?

A: The principal square root of 160 is 12.65 to two decimal places. The other square root of 160 is minus 12.65 to two decimal places. All real numbers have t... Full Answer >Filed Under: -
Q:
## What is the square root of 34?

A: Rounded to two decimal places, the square root of 34 is 5.83. It is not possible to simplify the radical ?34 because the number 34 does not have any perfec... Full Answer >Filed Under: -
Q:
## What is the simplest radical form of the square root of 24?

A: The simplest radical form of the square root of 24 is 2?6. It is the simplest radical form because it has no remaining square roots to simplify further. Full Answer >Filed Under: -
Q:
## What is the square root of 9?

A: The square root of the number 9 is 3. That is worked out by deducing that 3 multiplied by 3, or 3 squared, is 9, so the square root is 3. Full Answer >Filed Under: