by completing the​ square, what value should you add to each side of the​ equation?

Question

x^2- 7x=5

Answer 1

take 1/2 of the -7 and square that

so (-7/2)^2 = 49/4

we should add 49/4 to both sides

Answer 2

Solve the following and tell how many equations they have:

3(x+2) = 15

x=

How many solutions?

Answer 3

Solve the following and tell how many equations they have:

3(x+2) = 15