The equation has a missing value -2x(2 x-___)+ 1-4x

41/2 - 1 1/3 what is the answer as a fraction?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.