Answered

9. What are the factors of 25k² - 1? A. (5k + 1) (5k + 1) B. (5k - 1) (5k + 1) C. (5k - 1) (5k - 1) D. (k-5) (k+ 5)

answer:D​

Sagot :

Rosalesshainnamaeviz

Answer:

(5k+1)(5k-1)

Step-by-step explanation:

Rewrite the expression into the form of

a²– b²:(5k)²+1²

factor the expression using

a²– b² = (a + b) (a – b):

(5k+1)(5k-1)