exam Maths Puzzle Numerical Ability

he exercise is on the Identities chapter of the book DISCOVERING MATHS 4 (page 65) : ISBN 1-84131-533-8.

13. If x^2+px+q is afactor of x^3+ax^2+b, prove that:
i) b= q(a-p)
ii)

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exam Other Question

Suppose you travel north for 35 kilometers then travel east 65 kilometers. How far are you from your starting point? North and east can be considered the directions of the y- and x-axis respectively. Round to the tenths place I would like to know how can i compute the query that listed in the exercise 4.4 1 in the text book with the above ISBN.