Question

Select all of the solutions of 4x2 - 36 = 0. If there are no solutions, select the empty set.

Answer 1

Answer:

-3 ;  3

Step-by-step explanation:

4x² - 36 = 0 ⇌ (2x)² - 6² = 0 ⇌ (2x - 6)(2x + 6) = 0 ⇌ 2x - 6 = 0 or 2x + 6 = 0

⇌ x = 3 or x = -3