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

x^2+18x

i think it's + 81 but i'm not positive.

Question

Mathematics

Tyree Guerra

19 March, 23:10

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

x^2+18x

i think it's + 81 but i'm not positive.

+3

Answers (1)

Know the Answer?

Gage Miller · Answer 1

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+18xi think it's + 81 but i'm not positive.

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

x^2+18x

i think it's + 81 but i'm not positive.