What term should be added to create a perfect square trinomial ?? x^2+18x i think it’s +81 but i’m not positive.

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asked Mar 22, 2019 92.1k views

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Orbnexus · Answer 1 · 2019-03-28T12:56:02+0000

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

What term should be added to create a perfect square trinomial ?? x^2+18x i think it’s +81 but i’m not positive.

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