Intermediate Algebra – Student Workbook – Second Edition 2013

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$Lesson 2a – Assessment - Scottsdale Community College - Math Blog$

Lesson 5b - Solving Quadratic Equations Mini-Lesson Problem 1 MEDIA EXAMPLE – HOW MANY AND WHAT KIND OF SOLUTIONS Use your graphing calculator to help you determine the number and type of solutions to each of the quadratic equations below. Begin by putting the equations into standard form. Draw an accurate sketch of the parabola indicating the window you used. IF your solutions are real number solutions, use the graphing INTERSECT method to find them. Use proper notation to write the solutions and the x-intercepts of the parabola. Label the x-intercepts on your graph. a) x 2 – 10x + 25 = 0 b) -2x 2 + 8x – 3 = 0 c) 3x 2 – 2x = -5 How are Solutions to a Quadratic Equation connected to X-Intercepts of the parabola? If the quadratic equation ax 2 +bx+c = 0 has real number solutions x 1 and x 2 , then the x- intercepts of f(x) = ax 2 +bx+c are (x 1 , 0) and (x 2 , 0). Note that if a parabola does not cross the x-axis, then its solutions lie in the complex number system and we say that it has no real x-intercepts. Scottsdale Community College Page 210 Intermediate Algebra
Lesson 5b - Solving Quadratic Equations Mini-Lesson Problem 2 YOU TRY – HOW MANY AND WHAT KIND OF SOLUTIONS Use your graphing calculator to help you determine the number and type of solutions to each of the quadratic equations below. Begin by putting the equations into standard form. Draw an accurate sketch of the parabola indicating the window you used. IF your solutions are real number solutions, use the graphing INTERSECT method to find them. Use proper notation to write the solutions and the x-intercepts of the parabola. Label the x-intercepts on your graph. a) -x 2 - 6x - 9 = 0 b) 3x 2 + 5x + 20 = 0 c) 2x 2 + 5x = 7 Scottsdale Community College Page 211 Intermediate Algebra
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Scottsdale Community College Interm
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Table of Contents Lesson 1a - Intro
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Lesson 1a - Introduction to Functio
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Lesson 1b - Linear Equations In the
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Lesson 1b - Linear Equations Mini-L
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Lesson 1b - Linear Equations Practi
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Lesson 4a - Introduction to Logarit
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Lesson 6b - Rational Exponents & Ra
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Appendix A: You Try Answers Lesson
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Appendix A: You Try Answers You Try
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Intermediate Algebra – Student Workbook – Second Edition 2013

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