Question

Which value must be added to the expression x2 â€"" 3x to make it a perfect-square trinomial? Three-halves Nine-fourths 6 9.

Answer 1

The value that must be added to the expression x^2 - 3x to make it a perfect-square trinomial is 9/4

Given the expression x^2 - 3x

• In order to get the constant to be added to give a perfect trinomial, we will use the completing the square method.

Add the square of the half of coefficient of x.

• Coefficient of x = -3

• Half of the coefficient of x = (-3/2)
• Square of half of coefficient of x = (-3/2)^2 = 9/4

Therefore the value that must be added to the expression x^2 - 3x to make it a perfect-square trinomial is 9/4

Learn more on completing the square here: https://brainly.com/question/1596209

Answer 2

Answer:

its b 9/4

Step-by-step explanation:

i did it edg 2022