Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
Write in the form . Give and as fractions and as decimals to 3 places.
For : the conjugate is and the modulus is . Then , , and . To divide, multiply the top and the bottom by the conjugate of the bottom: .
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The bottom. .
Step 2. The top. .
Step 3. Divide. .
Answer: and .
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