Question

Find the solutions to the equation below.

Check all that apply.

x^2 - 25 = 0

A. x = 1

B. x = 5

C. x = -1

D. x = -5

E. x = 3

F. x = -3

Answer 1

B and D

Explanation:

x² - 25 = 0

Add 25 to both sides:

⇒ x² -25 + 25 = 0 + 25

⇒ x² = 25

Square root both sides:

⇒ √x² = √25

⇒ x = ±5

Therefore:

x = 5, x = -5

So B and D are the solutions