Question

which of the following represents the factorization of the binomial below x^2 -81 A. (x)(x-81) B. (x+9)(x+9) C. (x +9)( x -9) D. (x-9)(x-9)

Answer 1

C. expressions of the form a^2-b^2 can be written as (a-b)(a+b). Notice here that 81 = 9^2

Answer 2

thank you for the help i understand it more than before.

Answer 3

youre welcome