Square root of 7 minus square root of 21 (√7-√21)

√7 - √21

Here we will walk you through the process of calculating the difference between the square root of 7 and the square root of 21. Essentially, we will calculate √7 - √21.

First, we need to find the square root of each number individually. Then we will subtract one from the other. Below is the step-by-step calculation:

1. Calculate the square root of 7:
√7 ≈ 2.64575

2. Calculate the square root of 21:
√21 ≈ 4.58258

3. Subtract the square root of 21 from the square root of 7:
2.64575 - 4.58258 = -1.93683

Therefore, the result of subtracting the square root of 21 from the square root of 7 is approximately -1.93683.

√7 - √21 ≈ -1.93683

To make things even more convenient, we have also expressed the result in its simplest radical form:

√7 - √21

Subtracting Square Roots
Use the tool below to subtract another set of square roots.

Square root of 7 minus square root of 22
Here is another square root problem that you may find interesting.