What must be added to x2 - 3x to make it a perfect square?
Answer Details
To make a perfect square, we need to add the square of half of the coefficient of the x-term. In this case, the coefficient of x is -3, so we need to add \(\left(\frac{-3}{2}\right)^2 = \frac{9}{4}\) to make it a perfect square.
Thus, the answer is \(\frac{9}{4}\).