Question 832989
Standard Form should be easy to use, but you need the radius, which will be the distance between P and C.  You use Distance Formula for this.


{{{(x-(-5))^2+(y-7)^2=(sqrt((4-(-5))^2+(2-7)^2))^2}}}
You need to understand how that works, which is for you, most important; and then simplify the equation which is in standard form, just not finished in its calculations or computations.