If using the method of completing the square to solve the quadratic equation x^2+8x-4=0 ,which number would have to be added to "complete the square"?

yes

Step-by-step explanation:

see below

step-by-step explanation:

x+2> 6

subtract 2 from each side

x+2-2 > 6-2

x > 4

there is an open circle at 4 since is it is greater than and the line goes to the right

noncoplanar points are points that do not lie on the same line.