## How do you get rid of a square root at the bottom?

When we have a fraction with a root in the denominator, like 1/√2, it’s often desirable to manipulate it so the denominator doesn’t have roots.

To do that, we can multiply both the numerator and the denominator by the same root, that will get rid of the root in the denominator..

## How do you rationalize a square root?

Rationalize the DenominatorMultiply 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.

## Which is the square root of 225?

The positive square root of 225 is 15 because 152 = 225.

## Can you simplify the square root of 58?

Your question, sqrt(58) is much simpler, because it is the product of two primes, 2 and 29, and so nothing can be “taken out”, and thus cannot be reduced. You can use Newton’s method. For any number x, the square root of x = x^(1/2).

## How do you Rationalise a SURD?

Rationalising the denominator when the denominator has a rational term and a surd. If the denominator of a fraction includes a rational number, add or subtract a surd, swap the + or – sign and multiply the numerator and denominator by this expression.

## What is a rationalizing factor?

The factor of multiplication by which rationalization is done, is called as rationalizing factor. If the product of two surds is a rational number, then each surd is a rationalizing factor to other. Like if √2 is multiplied with √2, it will 2, which is rational number, so √2 is rationalizing factor of √2.

## How do you find the square root of a square?

Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. The perfect squares are the squares of the whole numbers. The square root of a number, n, written below is the number that gives n when multiplied by itself.

## Does square root cancel out square?

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 ).