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9-2 Skills Practice
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9-2 Skills Practice
Solve each equation by graphing. If integral roots cannot be found, estimate the roots to the nearest tenth. 5. p2 + 4p + 2 = 0. 6. x2 + x - 3 = 0 p. ...
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NAME
DATE
9-2
PERIOD
Skills Practice Solving Quadratic Equations by Graphing
Solve each equation by graphing. 1. x2 - 2x + 3 = 0 ∅
2. c2 + 6c + 8 = 0 -4, -2 f(c)
f (x)
O O
3. a2 - 2a = -1 1
4. n2 - 7n = -10 2, 5
f (a)
O
Lesson 9-2
f(n)
O
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
c
x
n
a
Solve each equation by graphing. If integral roots cannot be found, estimate the roots to the nearest tenth. 5. p2 + 4p + 2 = 0
6. x2 + x - 3 = 0
f (p)
f(x)
O O
p
-3.4, -0.6
-2.3, 1.3
7. d2 + 6d = -3
8. h2 + 1 = 4h f (d)
O
f(h) d
O
-5.4, -0.6 Chapter 9
x
h
0.3, 3.7 13
Glencoe Algebra 1
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