Rewriting a number using i

Rewriting a number using i

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to simplify a mathematical expression involving imaginary numbers. It begins by introducing the imaginary unit 'I' and the property of square roots of products. The instructor demonstrates how to break down an expression into simpler parts using these properties. The final result is presented as the product of the square root of 7 and the imaginary unit 'I', with a caution on proper notation to avoid confusion.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the rule for rewriting the square root of a product?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How can the square root of -1 be represented in terms of imaginary numbers?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Why can't sqrt(7) be simplified further?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What should you be careful about when writing the final answer involving sqrt(7) and I?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the simplified form of the expression involving sqrt(7) and sqrt(-1)?

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