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.

Learn more about Exponents-
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 10,000?

A: The square root of 10,000 is 100. The number 10,000 is a perfect square, so it is easy to calculate the square root using the prime factorization method. T... Full Answer >Filed Under: -
Q:
## What is the cube root of 250?

A: The cube root of 250 is 6.29. The cube root of a number, x, is equal to the number, y, such that y times y times y equals x. For the number 250, 6.29 times... Full Answer >Filed Under: -
Q:
## What is the square root of 6?

A: The square root of 6, calculated to 11 digits to the right of the decimal point, is 2.44948974278. Because the calculation does not produce a whole number,... Full Answer >Filed Under: