Answer:
Step-by-step explanation:
Hello, please consider the following.
First of all, we need to complete the squares, then move the constant to the right side, as below.
[tex]x^2+y^2+4x-10y-7=0\\\\(x+2)^2-4+(y-5)^2-25-7=0\\\\(x+2)^2+(y-5)^2=36=6^2[/tex]
And then, we can read the answers from the rearranged equation.
(a) The centre is then (-2,5)
(b) The radius is 6
Thank you.
