Solve the quadratic equation by factoring. 2 x² + 4x - 21 = 0
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Solve the quadratic equation by factoring.
Enter the exact answers.
x² + 4x − 21 = 0
The field below accepts a list of numbers or formulas separated by semicolons (e.g. 2; 4; 6 or
x + 1; x - 1). The order of the list does not matter.
To enter √a, type sqrt(a).
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