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5.4 Complex Numbers
Let’s see… Can you find the square root of a number? A. E.D. C.B.
So What’s new? To find the square root of negative numbers you need to use imaginary numbers. i is the imaginary unit i 2 = -1 i = Square Root Property For any real number x, if x 2 = n, then x = ±
What about the square root of a negative number? E.D. C. B. A.
Let’s Practice With i Simplify -2i (7i) (2 – 2i) + (3 + 5i) i 45 i 31 A. B. C. D. E.
Solve 3x 2 + 48 = 0 4x 2 + 100 = 0 x 2 + 4= 0 A. B. C.
5.4 Day #2 More with Complex Numbers Multiply (3 + 4i) (3 – 4i) (1 – 4i) (2 + i) (1 + 3i) (7 – 5i) (2 + 6i) (5 – 3i)
*Reminder: You can’t have i in the denominator Divide 3i5 + i 2 + 4i 2i -2i4 - i 3 + 5i 5i 2 + i 1 - i E. D. C. B. A.
Simplify, Add, Subtract, Multiply and Divide
5.4 Complex Numbers (p. 272).
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Chapter 5 Section 4: Complex Numbers. VOCABULARY Not all quadratics have real- number solutions. For instance, x 2 = -1 has no real-number solutions because.
Section 7.8 Complex Numbers The imaginary number i Simplifying square roots of negative numbers Complex Numbers, and their Form The Arithmetic.
6.2 – Simplified Form for Radicals
Review and Examples: 7.4 – Adding, Subtracting, Multiplying Radical Expressions.
Section 5.4 Imaginary and Complex Numbers
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Quadratic Functions & Inequalities
Copyright © 2014, 2010, 2007 Pearson Education, Inc.
1.3 Complex Number System.
Sullivan Algebra and Trigonometry: Section 1.3 Quadratic Equations in the Complex Number System Objectives Add, Subtract, Multiply, and Divide Complex.
5.6 Complex Numbers. Solve the following quadratic: x = 0 Is this quadratic factorable? What does its graph look like? But I thought that you could.
5.4 Complex Numbers By: L. Keali’i Alicea. Goals 1)Solve quadratic equations with complex solutions and perform operations with complex numbers. 2)Apply.
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