How to divide square roots

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PSAT Math › How to divide square roots

Questions 1 - 5
1

Simplify:

Explanation

To simplfy, we must first distribute the square root.

Next, we can simplify each of the square roots.

2

Find the quotient:

Explanation

Simplify each radical:

Rationalize the denominator:

3

(√27 + √12) / √3 is equal to

√3

(6√3)/√3

18

5

5/√3

Explanation

√27 is the same as 3√3, while √12 is the same as 2√3.

3√3 + 2√3 = 5√3

(5√3)/(√3) = 5

4

Find the quotient:

Explanation

Find the quotient:

There are two ways to approach this problem.

Option 1: Combine the radicals first, the reduce

Option 2: Simplify the radicals first, then reduce

5

Divide and simplify. Assume all integers are positive real numbers.

Explanation

There are two ways to solve this problem. First you can divide the numbers under the radical. Then simplify.

Example 1

Example 2

Find the square root of both numerator and denominator, simplifying as much as possible then dividing out like terms.

Both methods will give you the correct answer of .

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