What is the factorization of the expression below?

9x² - 49

(3x+7) (3x-7)

You can distribute these values to give you 9x^2 minus 49. For future reference, when you have no terms including x to the first power the basic numbers in the factored equation (in this case - 7 and 7) will be identical with one of them negative in order to cancel this piece out

(3x-7) (3x+7)

Step-by-step explanation:

9x² - 49

(3x) ² - (7) ²

(3x-7) (3x+7)