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Mathematics, 21.10.2019 18:30 sherlock19

The circle c has equation x^2+y^2+10x=20
a) show that point p=(-2,6) lies on c
b) hence find the equation of the tangent to the circle c at p

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The circle c has equation x^2+y^2+10x=20
a) show that point p=(-2,6) lies on c
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