I need an equation that equals 18

Step-by-step explanation:

There can be an infinite number of equations that equals 18.

Let us try this as a straight line in a coordinate plane

x+y =18

This solution will be all the points on the line whose x and y coordinates add up to 18

Example:

(1,17)(2,16)(0,18)(-1,19) and so on.  i.e. all the points on the line.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

1,918

step-by-step explanation: