`(1-x)(1+x^2)(1+x)(1+x^2)` equals:a.1-x^6b.1+x^6c.1-x^8d.1+x^8e. None of the above

2 Answers

degeneratecircle's profile pic

degeneratecircle | High School Teacher | (Level 2) Associate Educator

Posted on

None of the original answer choices is correct, so I added a choice e. We can rearrange and then use the difference of squares formula twice.



This is the second multiple choice question you've posted recently where all the answer choices are wrong. If you're getting them from a book, I suggest finding a new book :)