when asked to factor the trinomial x^2-18x+81 a student gives the answer (x-9 (x+9) which of the following statements is true

Question

Mathematics

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27 August, 22:12

when asked to factor the trinomial x^2-18x+81 a student gives the answer (x-9 (x+9) which of the following statements is true

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Answers (2)

Know the Answer?

Luciano Salinas · Answer 1

the answer is incorrect; the plus sign should be a minus sign

Jesus Hicks · Answer 2

(x - 9) (x + 9) would give you x^2 - 81 when you get a plus and minus like that after you factor the middle term is canceled out so the answer would be (x - 9) ^2