Asked and answered elsewhere.
brainly.com/question/1410592_____
Google doesn't recognize the terms "defects method" except in association with various postings of this same problem.
The answer is A
8.5% sales tax + 38.00= $41.23 x 5 (shirts)= $206.15
(x^2 - 1)(x^6 + x^4 + x^2) =
x^2(x^6 + x^4 + x^2) - 1(x^6 + x^4 + x^2) =
x^8 + x^6 + x^4 - x^6 - x^4 - x^2 =
x^8 - x^2 <==