(9x+7)(9x-7) what's the answer

asked Feb 21, 2019 120k views

0 votes

6.9k points

Please log in or register to add a comment.

3 votes

81x^2 - 49. The middle terms cancel out because of the opposing signs, but the answer is 81x^2 - 49

7.2k points

6 votes

They cancel each other out because one is + and the other is -.

Cakyus answered Feb 27, 2019

7.3k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.6m questions

10.2m answers