Solve Nested Roots: Simplifying ⁷√(⁴√14) Step by Step

Question

Solve the following exercise:

1447= \sqrt[7]{\sqrt[4]{14}}=

Video Solution

Solution Steps

00:00 Solve the following problem
00:03 When we have a number (A) to the power of (B) in a root of order (C)
00:07 The result equals the number (A) to the power of their quotient (B divided by C)
00:11 Let's apply this formula to our exercise
00:15 Calculate the order multiplication
00:20 This is the solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the inner and outer roots.
  • Step 2: Apply the root of a root formula.
  • Step 3: Calculate the combined root.

Now, let's work through each step:

Step 1: The expression given is 1447 \sqrt[7]{\sqrt[4]{14}} . The inner root is 144 \sqrt[4]{14} , and the outer root is ()7 \sqrt[7]{(\cdot)} .

Step 2: Use the formula for the root of a root: xmn=xnm \sqrt[n]{\sqrt[m]{x}} = \sqrt[n \cdot m]{x} .

Step 3: Plug in our values: n=7 n = 7 and m=4 m = 4 . Thus, we have:

1447=147×4=1428 \sqrt[7]{\sqrt[4]{14}} = \sqrt[7 \times 4]{14} = \sqrt[28]{14}

Therefore, the simplified form of the given expression is 1428 \sqrt[28]{14} .

Answer

1428 \sqrt[28]{14}