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10. Which of the following expressions is a perfect square. a. 81x2 + 100 b. 81x2 - 90x + 100 c. 81x2 – 180x – 100 d. 81x2 - 180x + 100 e. 81x2 – 100 -

10. Which of the following expressions is a perfect square. a. 81x2 + 100 b. 81x2 - 90x + 100 c. 81x2 – 180x – 100 d. 81x2 - 180x + 100 e. 81x2 – 100 -

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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10. Which of the following expressions is a perfect square. a. 81x2 + 100 b. 81x? – 90x + 100 c. 81x? – 180x – 100 d. 81x2 – 180x + 100 e. 81x2 – 100
Transcribed Image Text:10. Which of the following expressions is a perfect square. a. 81x2 + 100 b. 81x? – 90x + 100 c. 81x? – 180x – 100 d. 81x2 – 180x + 100 e. 81x2 – 100
18. Pedro threw a shot putt ball into the air. The path of the shot putt ball is modelled by the hments quadratic function h(d) = -d² +d + 2 where h is the height of the ball above ground, in metres, and d is the horizontal distance of the shot putt ball from Pedro, in metres. What is the maximum height of the shot putt? (C) o Renc a. Om b. 8 m C. 4 m d. 2.5 m
Transcribed Image Text:18. Pedro threw a shot putt ball into the air. The path of the shot putt ball is modelled by the hments quadratic function h(d) = -d² +d + 2 where h is the height of the ball above ground, in metres, and d is the horizontal distance of the shot putt ball from Pedro, in metres. What is the maximum height of the shot putt? (C) o Renc a. Om b. 8 m C. 4 m d. 2.5 m
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