+2 7. h(x) = x² + 4x

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter10: Radical Functions And Equations
Section10.1: Graphing Square Root Functions
Problem 53E
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can you help and show me how to do #7

GUIDED PRACTICE
1. Vocabulary The solutions of the equation 3x + 2x + 5 = 0 are its_?_ .
(roots or zeros)
SEE EXAMPLE
Find the zeros of each function by using a graph and table.
p. 333 L 2. f(x) = x² + 4x – 5
3. g(x) = -x² + 6x – 8
4. f(x) = x² – 1
SEE EXAMPLE 2
p. 334
Find the zeros of each function by factoring.
5. f(x) = x² – 7x + 6
6. g(x) = 2x² – 5x + 2
7. h(x) = x² + 4x
8. f(x) = x² + 9x + 20
9. g(x) = x² – 6x – 16
10. h(x) = 3x² + 13x + 4
SEE EXAMPLE 3 11. Archery The height h of an arrow in feet is modeled by h(t) = –161² + 63t + 4,
where tis the time in seconds since the arrow was shot. How long is the arrow
in the air?
p. 335
Find the roots of each equation by factoring.
12. x - 6x = -9
SEE EXAMPLE
p. 336
13. 5x² + 20 = 20x
14. x² = 49
SEE EXAMPLE 5 Write a quadratic function in standard form for each given set of zeros.
p. 337 E 15. 3 and 4
16. -4 and -4
17. 3 and 0
Transcribed Image Text:GUIDED PRACTICE 1. Vocabulary The solutions of the equation 3x + 2x + 5 = 0 are its_?_ . (roots or zeros) SEE EXAMPLE Find the zeros of each function by using a graph and table. p. 333 L 2. f(x) = x² + 4x – 5 3. g(x) = -x² + 6x – 8 4. f(x) = x² – 1 SEE EXAMPLE 2 p. 334 Find the zeros of each function by factoring. 5. f(x) = x² – 7x + 6 6. g(x) = 2x² – 5x + 2 7. h(x) = x² + 4x 8. f(x) = x² + 9x + 20 9. g(x) = x² – 6x – 16 10. h(x) = 3x² + 13x + 4 SEE EXAMPLE 3 11. Archery The height h of an arrow in feet is modeled by h(t) = –161² + 63t + 4, where tis the time in seconds since the arrow was shot. How long is the arrow in the air? p. 335 Find the roots of each equation by factoring. 12. x - 6x = -9 SEE EXAMPLE p. 336 13. 5x² + 20 = 20x 14. x² = 49 SEE EXAMPLE 5 Write a quadratic function in standard form for each given set of zeros. p. 337 E 15. 3 and 4 16. -4 and -4 17. 3 and 0
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