For which equation would x = 12 not be a solution?

For B. x=12 would not be a solution.

x/4=2

Step-by-step explanation:

When you divide 12 by 4, it equals 3

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this