, Factor
So r = 6 and r = -3
.
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Graphic
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Note that only 4.046 sec is appropriate for the problem; i.e. The ball hits the ground 4.056 sec after it was hit.
| Lesson 7 - 2.6# 1
Solve quadratic equation by factoring:
So r = 6 and r = -3
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Lesson 7 - 2.6# 2
Solve quadratic equation by using the quadratic formula:
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| Lesson 7 - 2.6 #10a Solve by
quadratic formula and graph .
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Lesson 7 - 2.6#13 Solve
quadratic equation
Note that only 4.046 sec is appropriate for the problem; i.e. The ball hits the ground 4.056 sec after it was hit. |