9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
5/15: Warm Up
1. Solve by completing the square:
a)
b)
2. Use completing the square to find the vertex.
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
9.6: The Quadratic Formula & The Discriminant
May 15, 2015
Date: 5/15
Method #5: The Quadratic Formula
The Quadratic Formula:
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
Ex 1). Solve the quadratic equation using the quadratic
formula:
a)
b)
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
Ex 2). Jacob tosses a baseball across the playground. The arc of
the ball can be modeled by the equation
where x is the horizontal distance (in meters) from Jacob and y is
the height (in meters) of the ball. How far from Jacob does the ball
land?
,
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
Ex 3). Which method(s) would you choose to solve each
equation? Explain.
a)
b)
c)
d)
e)
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
The Discriminant:
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
Ex 4). Use the discriminant to determine the number of
solutions:
a)
b)
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9.6 ­ The Quadratic Formula and The Discriminant.notebook
May 15, 2015
Homework:
pg. 586 #1 – 3, 8 – 40(e)
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