Let (x,y) be an ordered pair of real numbers that satisfies the equation x^2+y^2=14x+48y. What is the minimum value of x?
This is an equation of a circle.....
do some re-arranging and completing of the square for x and y to get
(x-7)^2 + (y-24)^2 = 25^2 center at 7, 24
minimum value of x will be at the value of the center point x minus the radius (7 - 25) = - 18