SOLUTION: x²+y²+4x-96=0

Algebra ->  Linear-equations -> SOLUTION: x²+y²+4x-96=0      Log On


   



Question 1175396: x²+y²+4x-96=0
Answer by ikleyn(52946) About Me  (Show Source):
You can put this solution on YOUR website!
.

    x² + y² + 4x - 96 = 0


    (x^2 + 4x) + y^2 = 96


    (x*2 + 4x + 4) + y^2 = 96 + 4


Make a square


    %28x%2B2%29%5E2 + y%5E2 = 100


It is the standard equation of the circle centered at the point (-2,0) with the radius of  sqrt%28100%29 = 10 units.

Solved.