Respuesta :

TheHero
Let's say you have an equation like

x^2 + 6x 

to complete the square you must make sure that the second term (6x in this case) contains the first one. the rest is just formula application.

a^2 + ba

(a + b/2)^2 - b^2 

so in our case

a^2 = x^2

a = x

b = 6
b/2 = 3

(x+3)^2 - 9

I hope that helps.!

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