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## Does squaring a square root cancel it?

We can say that the square root and the square cancel each other out. They are the inverse of each other. If we have a number written with the index 2 ( squared ) then taking the square root simply means that we leave out the 2 ( this only applies to positive numbers ).

## What is 9 The square root of?

The square root of a number is a number that, when multiplied by itself, equals the desired value. So, for example, the square root of 49 is 7 (7×7=49). List of Perfect Squares.

NUMBER | SQUARE | SQUARE ROOT |
---|---|---|

6 | 36 | 2.449 |

7 | 49 | 2.646 |

8 | 64 | 2.828 |

9 | 81 | 3.000 |

## How do you find square roots without a calculator?

Finding square roots of of numbers that aren’t perfect squares without a calculator

- Estimate – first, get as close as you can by finding two perfect square roots your number is between.
- Divide – divide your number by one of those square roots.
- Average – take the average of the result of step 2 and the root.

## How do you multiply square roots?

Correct answer: To multiply square roots, we multiply the numbers inside the radical. Any numbers outside the radical are also multiplied.

## How do you Rationalise roots?

Rationalize the Denominator

- Multiply Both Top and Bottom by a Root. Sometimes we can just multiply both top and bottom by a root: Example:
- Multiply Both Top and Bottom by the Conjugate. There is another special way to move a square root from the bottom of a fraction to the top we multiply both top and bottom by the conjugate of the denominator.

## How do you rationalize a calculator?

The procedure to rationalize the denominator calculator is as follows:

- Step 1: Enter the numerator and the denominator value in the input field.
- Step 2: Now click the button “ Rationalize Denominator” to get the output.
- Step 3: The result will be displayed in the output field.