Question

what number would you add to the equation below to complete the square?
x^2+16x=0

Answer 1

What number did you add to it?

Answer 2

When you complete the square, the coefficient of the x^2 term must be 1.
Here it is 1 already since you have simply x^2.
The number you add to both sides is the square of half of b.
x^2 + bx + c = 0
b is the coefficient of the x term.

Here b is 16.
Half of b = 8
The square of 8 = 64.
So you add 64 to both sides.

Answer 3

Thanks.

Answer 4

wlcm