Solve by using square roots???

Question

Solve by using square roots:

3x² - 27 = 0

Answer 1

Factor out the common factor.

3(x² - 9) = 0

Now you have the difference of squares.

3(x + 3)(x - 3) = 0

x + 3 = 0

x = -3

x- 3 = 0

x = 3

Answer 2

3x² - 27 = 0 [Add 27 to both sides to get:

3x² = 27 [Now, divide both sides by 3 to get:

x² = 9 [Now take the square root of both sides to get:

x = 3 or x = -3