Find the center and the radius of this equation by completing the

square.

For the values of x and y, be sure to include the "+" or "-" sign before

the number.

x2 + 4x + y2 – 20y + 100 = 0

C=( -2

10

Dr=

And solving we got:

If we subtract 100 from both sides we got:

Step-by-step explanation:

For this case we have the following equation given:

We want to find a general expression given by:

Where the center is (h.k) and the radius is r.

We can begin completing the squares of the equation given and we got:

And solving we got:

If we subtract 100 from both sides we got:

Then we can conclude that the center is:

And the radius would be:

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!