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Illustrative Math - Algebra 2 - Unit 3 - Lesson 15

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1.

Select all the expressions that are equivalent to (3-5i)(-8+2i).

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2.

Explain or show how to write (20-i)(8+4i) in the form a+bi, where a and b are real numbers.

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3.

Without going through all the trouble of writing the left side in the form a+bi, how could you tell that this equation is false?

(-9+2i)(10-13i)=-68-97i

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This lesson is from Illustrative Mathematics. Algebra 2, Unit 3, Lesson 15. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/3/3/15/index.html ; accessed 27/July/2021.

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