Factor completely 49x^2-25

(7x-5) (7x+5)

(7x + 5) (7x - 5)

Step-by-step explanation:

49x² - 25 ← is a difference of squares and factors in general as

a² - b² = (a + b) (a - b)

49x² = (7x) ² ⇒ a = 7x

25 = 5² ⇒ b = 5

49x² - 25

= (7x) ² - 5² = (7x + 5) (7x - 5)