Question 614827
 write the equation of a circle with a center at (_5,_5) and a diameter of 13
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{{{(x-5)^2 + (y-5)^2 = 6.5^2}}} center at (5,5)
{{{(x+5)^2 + (y+5)^2 = 6.5^2}}} center at (-5,-5)