Find the number that will make this a perfect square trinomial

asked Aug 5, 2023 136k views

2 votes

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5 votes

x^2 + 6x + ?

Take the coefficient of x

Divide by 2

6/2 = 3

Square it

3^2 = 9

Add this to make it a perfect square trinomial

x^2+6x+9

(x+3)^2

Answer: add 9

Imo answered Aug 12, 2023

by Imo

4.7k points

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