Solve Nested Square Roots: Simplifying √(√625) Step by Step

Question

Solve the following exercise:

625= \sqrt{\sqrt{625}}=

Video Solution

Solution Steps

00:00 Solve the following problem
00:03 A "regular" root is of the order 2
00:10 When we have a number (A) in a root of the order (B) in a root of the order (C)
00:17 The result equals the number (A) in a root of the order (B times C)
00:22 We'll apply this formula to our exercise
00:28 Calculate the order multiplication
00:38 When we have a number (A) raised to the power (B) in a root of order (C)
00:43 The result equals the number (A) raised to the power (B divided by C)
00:47 We'll apply this formula to our exercise
00:54 This is the solution

Step-by-Step Solution

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

  • Step 1: Evaluate the innermost square root, 625 \sqrt{625} .
  • Step 2: Evaluate the square root of the result from Step 1.

Now, let's work through each step:

Step 1: Evaluate 625 \sqrt{625} .
The square root of 625 is 25, since 25×25=625 25 \times 25 = 625 . Thus, 625=25 \sqrt{625} = 25 .

Step 2: Evaluate 25 \sqrt{25} .
The square root of 25 is 5, since 5×5=25 5 \times 5 = 25 . Thus, 25=5 \sqrt{25} = 5 .

Therefore, the solution to the problem 625 \sqrt{\sqrt{625}} is 5.

Answer

5