Alyssa is factoring the following expression p∆2-8p-9. She said the answer is (p-1) (p + 9). Is she correct? If not, explain her error and find the correct answer.

Question

Bo Campos

Mathematics

7 December, 15:24

Alyssa is factoring the following expression p∆2-8p-9. She said the answer is (p-1) (p + 9). Is she correct? If not, explain her error and find the correct answer.

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Answers (1)

Know the Answer?

Alena Cohen · Answer 1

Step-by-step explanation:

p^2-8p-9

factor out the trinomial

(p-9) (p+1)

Therefore, she's incorrect. Because (p-1) (p+9) = p^2-p+9p-9=p^2+8p-9 and that's different from p^2-8p-9.