a. Show that x 2 + y 2 4x 11 = 0 can be written
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a. Show that x2 + y2 − 4x − 11 = 0 can be written in the form (x − a)2 + y2 = r2, where a and r are numbers to be found.
b. Hence write down the centre and radius of the circle with equation x2 + y2 − 4x − 11 = 0
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To show that the equation x2 y2 4x 11 0 can be written in the form x a2 y2 r2 we n...View the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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