Question

When 5x2−5 is completely factored, which is one of its factors?

Answer 1

5(x + 1)(x - 1)

Explanation:

Given

5x² - 5 ← factor out 5 from each term

= 5(x² - 1) ← x² - 1 is a difference of squares

= 5(x + 1)(x - 1)

The factors are 5, (x + 1) and (x - 1)