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Objective Video Example by Mrs. G Give It a Try Lesson 5.3 Define and identify complex numbers Plot complex numbers in a complex plane Perform operations with complex numbers Find the absolute value of a complex number

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Video Objective Video Example by Mrs. G Give It a Try www.youtube.com Marty Brandl

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Example by Mrs. G Objective Video Example by Mrs. G Give It a Try Click to continue. Real Numbers Rational Numbers Irrational Numbers π e Integers Whole Numbers Counting Numbers Complex Numbers (a + bi) Imaginary Numbers (a + bi, b 0) Pure Imaginary Numbers (0 + bi, b 0)

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Example by Mrs. G Objective Video Example by Mrs. G Give It a Try Click to continue. The i in a complex number is NOT A VARIABLE. – This allows us to deal with negatives inside of the radical. What if we square both sides?

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Example by Mrs. G Objective Video Example by Mrs. G Give It a Try Click to continue. Write the expression as a complex number in standard form. a) b)

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Example by Mrs. G Objective Video Example by Mrs. G Give It a Try Click to continue. Write the expression as a complex number in standard form. a) b) c) F O I L

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Give It a Try Objective Video Example by Mrs. G Give It a Try Write the expression as a complex number in standard form. Bring your work and answer to our next class!

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Section 2-8 Definitions Square root: = 6. Radical sign: This is a radical sign. Perfect square: 4, 9, 16, 25, … are perfect square numbers. Because 2*2=4,

Section 2-8 Definitions Square root: = 6. Radical sign: This is a radical sign. Perfect square: 4, 9, 16, 25, … are perfect square numbers. Because 2*2=4,

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