It seems like there was a small error in writing the expression. Did you mean to write \( \sqrt{0.5} - 2 \)?

If so, let's solve this:

\[
\sqrt{0.5} - 2
\]

First, calculate the square root of 0.5:

\[
\sqrt{0.5} \approx 0.7071
\]

Now, subtract 2:

\[
0.7071 - 2 \approx -1.2929
\]

So, the final result is approximately \( -1.2929 \).

Would you like more details on any part of the calculation?

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Here are 8 related questions you might find interesting:
1. What is the exact value of \(\sqrt{0.5}\) in simplified radical form?
2. How would you simplify \(\sqrt{0.5}\) using rational numbers?
3. Can you solve \(\sqrt{0.25} - 1\)?
4. What is the square root of 0.25?
5. What is the square root of 2?
6. How would you approximate the square root of any number without a calculator?
7. What is the square root of a negative number?
8. Can you graph the function \(f(x) = \sqrt{x} - 2\)?

**Tip:** When dealing with square roots of decimals, it's often helpful to first express the decimal as a fraction for easier simplification.

Learn how to solve the expression \( \sqrt{0.5} - 2 \) step-by-step with a detailed explanation. Understand the process of calculating square roots of decimals and performing subtraction. Suitable for Grades 7-9.

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