Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 8 - Section 8.4 - Equations Quadratic in Form - Exercise Set - Page 637: 64

Answer

FALSE. There are three methods that can be used to solve for the solution of an equation in quadratic form. These are: 1. By factoring 2. By completing the square 3. By using the quadratic formula.

Work Step by Step

FALSE. There are three methods that can be used to solve for the solution of an equation in quadratic form. These are: 1. By factoring 2. By completing the square 3. By using the quadratic formula. For example: $ x^2-2x+1=0$ By factoring: $(x-1)^2=0$ $x=1$ By completing the square: $ x^2-2x=-1$ $ x^2-2x=-1$ $ x^2-2x+1=-1+1$ $ x^2-2x+1=0$ $ (x-1)^2=0$ $x=1$ By using the quadratic formula: $a=1$, $b=-2$, $c=1$ $x = \frac{-b±\sqrt{b^2-4ac}}{2a}$ $x = \frac{-(-2)±\sqrt{(-2)^2-(4⋅1⋅1}}{2⋅1}$ $x = \frac{2±\sqrt{4-4}}{2}$ $x=1$
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