Stitz-Zeager_College_Algebra_e-book

4 to prove the celebrated binomial theorem the ardent

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Unformatted text preview: , 0), ± 3, −1 (d) (±4, 0) y y 4 2 3 2 1 1 −2 −1 1 x 2 −6 −5 −4 −3 −2 −1 −1 −1 1 2 3 3 4 4 5 6 x x −2 −2 −3 −4 −3 √ √ −4 (e) ± 4 5 7 , ± 125 2 y (b) No solution 4 3 y 2 2 1 1 −4 −3 −2 −1 −1 1 2 −2 −2 −1 1 x 2 −3 −1 −4 −2 (f) 1 + −3 √ √ √ √ 7, −1 + 7 , 1 − 7, −1 − 7 −4 y 4 3 2 1 (c) (0, ±4) −4 −3 −2 −1 −1 y 4 3 4 x −3 2 2 −2 3 1 −4 1 −4 −3 −2 −1 −1 1 2 3 4 x −2 −3 −4 2. (a) ±2 √ √ 10 15 ,± 5 5 (b) (0, 1) (c) (0, ±1), (2, 0) √ (d) 5 4 3, ± 9 (e) (3, 4), (−4, −3) (f) (±3, 4) (g) (−4, −56), (1, 9), (2, 16) (h) (3, 4) 548 Systems of Equations and Matrices 3. 4.5 miles per hour 4. 24 miles per hour 5. 3600 gallons 6. 40 3 ≈ 13.33 minutes 7. 3 hours 8. Initially, there are 250000 ≈ 5102 bacteria. It will take 49 to grow to 50,000 bacteria. √ 9. (a) − 3 5, 49 5 ln(49/5) ln(7/5) ≈ 33.92 minutes for the colony √ (c) e−5 , 7 (b) No solution 10. (1, 4, 8), (−1, 4, 8) 11. (a) y x2 − y 2 ≤ 1 x2 + 4 y 2 ≥ 4 2...
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