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16-06-2017
Mathematics

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How many y-intercepts does the circle x^2 + (y - 2)^2 = 16 have?

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ghanami ghanami

16-06-2017

hello :
y-intercepts when : y = 0 : x² +(0-2)² = 16
x² = 12....(1)
two y-intercepts because the equation (1) has two solutions

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