Question

Find the length of the radius of the given circle. (x - 5)2 + (y + 3)2 = 25

Answer 1

r^2 r=5 hope this helps

Answer 2

Assuming the 2's imply that each binomial is squared, then the constant on the right hand side is equal to the square of the radius of the circle.

r^2 = 25
So, r = 5