Question

http://prntscr.com/9ckmwc

Answer 1

pretty sure it is b

Answer 2

any other opinions?

Answer 3

I would help but i cant get the page to open

Answer 4

do you know how to complete the square ??

Answer 5

What are the center and radius of the circle defined by the equation ?
x^2=y^2-6x+10y+25=0

A. Center (3, -5); radius 3
B. Center (-3, 5); radius 3
C. Center (-3, 5); radius 9
D. Center (3, -5); radius 9

Answer 6

no, pls explain

Answer 7

no medal?

Answer 8

first move the constant term to the right side
and then x's and y's terms together \[\large\rm \color{Red}{(x^2-6x)}+\color{blue}{(y^2+10y)}=-25\] i just subtracted 25 both sides

Answer 9

im still not sure on the answer

Answer 10

now make the both parentheses trinomial by completing the square
to complete the square you need to take half of x term and then square it
in other words add (b/2)^2 to the opposite side

Answer 11

no clue

Answer 12

for example for first one
\[\large\rm \color{Red}{(x^2-6x)}+\color{blue}{(y^2+10y)}=-25\]
(x^2-6x) where b is -6
takle half\[(x+\frac{b}{2})^2\] of b which is -3 and then take square of it 3^2= 9
now add 9 to the opposite side \[\large\rm \color{Red}{(x^2-6x+9)}+\color{blue}{(y^2+10y)}=-25\color{Red}{+9}\]
and now you can factor (x^2-6x+9) or in short form when we complete the square the factor of trinomal would always be \[\rm (x+\frac{b}{2})^2 \] do the same with y's values

Answer 13

im just dumb ):

Answer 14

you're not dumb you're not trying that's it

Answer 15

lol, but thanks for helping