What number must you add to complete the square? x^2-7

12.25

Step-by-step explanation:

To find the c value in the equation, we need to divide b by two and then square it.

b= -7 and -7/2 is 3.5

Then we square 3.5 and we get 12.25

(x+0)^2-7

Step-by-step explanation:

x^2-7 to complete the square use the formula (b/2)^2 in order to create a new term.

ax^2+bx+c in this case b=0

(x+0)^2-7

hope it works

answer: the answer is ann