The equation x 2 + bx + c = 0 has roots 2 and 7. a. Find
Question:
The equation x2 + bx + c = 0 has roots −2 and 7.
a. Find the value of b and the value of c.
b. Using these values of b and c, find:
i. The coordinates of the vertex of the curve y = x2 + bx + c
ii. The set of values of x for which x2 + bx + c < 10.
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a Since the roots are 2 and 7 the quadratic can be factored as ...View the full answer
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Related Book For 
Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook
ISBN: 9781108407144
1st Edition
Authors: Sue Pemberton, Julian Gilbey
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