Question

Can someone help me!!!

Answer 1

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.

`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`

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.