A student solves a quadratic equation this way: Equation x - 3x - 4 = 0 ,2 Step 1: x- 3x = 4 Step 2: x(x- 3) = 4 Step 3: x = 2 or x- 3 = 2 Step 4: x= 2 or x = 5 The solution is incorrect. Identify the step that does not follow logically from the previous step. Provide mathematical justification for your answer.
A student solves a quadratic equation this way: Equation x - 3x - 4 = 0 ,2 Step 1: x- 3x = 4 Step 2: x(x- 3) = 4 Step 3: x = 2 or x- 3 = 2 Step 4: x= 2 or x = 5 The solution is incorrect. Identify the step that does not follow logically from the previous step. Provide mathematical justification for your answer.
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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
Transcribed Image Text:A student solves a quadratic equation this way:
Equation x- 3x - 4 = 0
,2
Step 1: x- 3x = 4
Step 2: x(x- 3) = 4
Step 3: x = 2 or x- 3 = 2
Step 4: x= 2 or x = 5
The solution is incorrect. Identify the step that does not follow logically from the previous step. Provide mathematical justification for your answer.
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