Question 578112
Find the equation of the locus of a point which moves so that the sum of its distances from the points (2,1) and (8,1) is 10
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The distance from P(x,y) to (2,1) = sqrt((x-2)^2 + (y-1)^2)
The distance from P(x,y) to (8,1) = sqrt((x-8)^2 + (y-1)^2)
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{{{sqrt((x-2)^2 + (y-1)^2) + sqrt((x-8)^2 + (y-1)^2) = 10}}}