Which value must be added to the expression x2 – 3x to make it a perfect-square trinomial?

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 455 People

Which value must be added to the expression x^2-3x to make it a perfect-square trinomial?
A) 3/2
B) 9/4
C) 6
D) 9

Answered by maham237 @ 25/12/2020

Answer:

You must add 9/4 in order to make this a perfect square.

Step-by-step explanation:

To make any binomial into a perfect square trinomial, you have to take the middle term (-3), cut it in half (-3/2) and then square it (9/4). This will give you the constant to make a perfect square trinomial every time.

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