usernamee16 usernamee16

09-03-2018
Mathematics

contestada

what term should be added to create a perfect square trinomial ??

x^2+18x
i think it’s +81 but i’m not positive.

Respuesta :

jimthompson5910 jimthompson5910

09-03-2018

Yes you are correct. You take half of the x coefficient 18 to get 9, then you square 9 to get 81

x^2+18x+81 is a perfect square trinomial which factors to (x+9)^2

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