a By sketching graphs of y x 3 5x 2 and y 5 2x, determine the number of real roots of the equation x 3 5x 2 2x 5 0 b Verify by calculation that the largest root of x 3 5x 2 2x 5 0 lies between x 0 and x 2 ...

a First sketch the graphs of y x3 5x2 and y 5 2x on the same set of axes From the graph we can see ...

a. By sketching graphs of y = x 3 + 5x 2 and y = 5

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a. By sketching graphs of y = x³ + 5x² and y = 5 − 2x, determine the number of real roots of the equation x³ + 5x² + 2x − 5 = 0.

b. Verify by calculation that the largest root of x³ + 5x² + 2x − 5 = 0 lies between x = 0 and x = 2.

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Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

ISBN: 9781108407199

1st Edition

Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey

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a. By sketching graphs of y = x 3 + 5x 2 and y = 5

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a First sketch the graphs of y x3 5x2 and y 5 2x on the same set of axes From the graph we can see ...View the full answer

Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

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