What number must you add to complete the square? x2 + 8x = -3

You must add 16 to both sides to complete the square.

Step-by-step explanation:

When you complete the square, you half to take half of the coefficient of x, which is 8 and then square it.

8*1/2 = 4

4^2 = 16

The Answer the question: the answer is 16

Step-by-step explanation:

The easiest way to figure out what number you must add to complete the square, look at b (the number with the x variable) divide it by 2, the square it. 8 divided by 2 is 4, and 4 squared is 16. Therefore you must add 16 to both sides to complete the square.

1/4 because there is 4 grades.

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .