To complete the expression while subtracting radicals, let's consider a specific example.
Let's take:
- \(\sqrt{18}\)
- \(\sqrt{8}\)
Now, we can simplify both radicals:
- \(\sqrt{18} = \sqrt{9 \cdot 2} = 3\sqrt{2}\)
- \(\sqrt{8} = \sqrt{4 \cdot 2} = 2\sqrt{2}\)
Now, we can subtract the simplified radicals:
\[ 3\sqrt{2} - 2\sqrt{2} = (3 - 2)\sqrt{2} = 1\sqrt{2} \]
Now we can fill in the blanks:
\[ 3\sqrt{2} - 2\sqrt{2} = 1\sqrt{2} \]
So the completed expression is:
3√2 - 2√2 = 1√2.