Summary for rewriting a number using the imaginary unit i

The video tutorial explains how to simplify expressions using the imaginary unit I, focusing on the square root of negative numbers. It emphasizes understanding the rules of radicals and provides tips for factoring numbers using prime numbers. The importance of knowing square numbers and verifying answers with a calculator is also highlighted.

Why is it important to know square numbers when working with radicals?

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What steps should you take to verify your answer when simplifying square roots?

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