Solve the Nested Square Root: Finding √√12

Question

Solve the following exercise:

12= \sqrt{\sqrt{12}}=

Video Solution

Solution Steps

00:00 Solve the following problem
00:03 A 'regular' root is of the order 2
00:08 When we have a number (A) raised to the power (B) in a root of order (C)
00:13 The result equals the number (A) raised to the power of their quotient (B divided by C)
00:17 Let's apply this formula to our exercise
00:21 Let's calculate the order multiplication
00:26 This is the solution

Step-by-Step Solution

In order to solve the following expression 12 \sqrt{\sqrt{12}} , it needs to be simplified using the properties of exponents and roots. Specifically, we apply the rule that states that the square root of a square root can be expressed as a fourth root.

Let's break down this solution step by step:

  • First, represent the inner 12 \sqrt{12} as a power: 121/2 12^{1/2} .

  • Next, take the square root of this result, which involves raising 121/2 12^{1/2} to the power of 1/2 1/2 again:
    (121/2)1/2=12(1/2)(1/2)=121/4\left(12^{1/2}\right)^{1/2} = 12^{(1/2) \cdot (1/2)} = 12^{1/4}.

  • According to the rules of exponents, raising an exponent to another power results in multiplying the exponents.

  • This gives us 121/4 12^{1/4} , which we can write as the fourth root of 12: 124 \sqrt[4]{12} .

In conclusion the simplification of 12 \sqrt{\sqrt{12}} is 124 \sqrt[4]{12} .

Answer

124 \sqrt[4]{12}