Ask Question
31 January, 16:31

Which expression correctly factors the polynomial?

9x2 - 49

A. (3x - 7) ?

B. (3x - 7) (3x + 7)

C. (9x + 7) (x - 7)

D. (9x - 7) (x + 7)

+2
Answers (1)
  1. 31 January, 17:01
    0
    B

    Step-by-step explanation:

    9x² - 49 ← is a difference of squares and factors in general as

    a² - b² = (a - b) (a + b)

    Thus

    9x² - 49

    = (3x) ² - 7²

    = (3x - 7) (3x + 7) → B
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Which expression correctly factors the polynomial? 9x2 - 49 A. (3x - 7) ? B. (3x - 7) (3x + 7) C. (9x + 7) (x - 7) D. (9x - 7) (x + 7) ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers