Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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Question
Solve the following 3 quadratic equations
using the quadratic formula:
-b±yb²–4ac
2a
a) 4x2 + 12x + 9 = 0
b) x² – x + 3 = 0
-
c) 2x2 + 5x – 2 = 0
C
d) The value under the radical
(6² – 4ac) is called the discriminant.
Using the examples that you calculated
above, explain how the discriminant
determines how many real solutions there
are for a quadratic equation.
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Transcribed Image Text:Solve the following 3 quadratic equations using the quadratic formula: -b±yb²–4ac 2a a) 4x2 + 12x + 9 = 0 b) x² – x + 3 = 0 - c) 2x2 + 5x – 2 = 0 C d) The value under the radical (6² – 4ac) is called the discriminant. Using the examples that you calculated above, explain how the discriminant determines how many real solutions there are for a quadratic equation.
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