Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Answer:2 whole 1/4Step-by-step explanation:When forming a perfect square trinomial you need to "complete the square". All of the steps to completing the square when solving an equation: 1.  The leading coefficient must be 1.  2.  Divide b by 2. 3.  Square (b/2) 4.  Add (b/2)^2 to both sides to keep the polynomial balanced. 5.  You can now write the perfect square trinomial and solve. x^2 - 3x  -3/2 (-3/2)^2 = 9/4 = 2 1/4