Question

What are the solution(s) to the quadratic equation x2 – 25 = 0?

Answer 1

x = - 5 or x = + 5

Explanation:

x² - 25 ← is a difference of squares

and factors as

(x - 5)(x + 5) = 0

equate each factor to zero and solve for x

x - 5 = 0 ⇒ x = 5

x + 5 = 0 ⇒ x = - 5