Question

Factor 7w2−175.(1 point)

−7(w−25)

7(w−25)

7(w−5)(w+5)

7(w−5)(w−5)

Answer 1

7(w + 5)(w -5)

Explanation:

a² - b² = (a + b)(a - b)

7w² - 175 = 7w² - 7*25

= 7(w² - 25)

= 7(w² - 5²)

= 7(w + 5)(w -5)