Question

What are the solutions of 12 – x2 = 0?

x = 2 StartRoot 3 EndRoot and x = Negative 2 StartRoot 3 EndRoot
x = 3 StartRoot 2 EndRoot and x = Negative 3 StartRoot 2 EndRoot
x = 4 StartRoot 3 EndRoot and x = Negative 4 StartRoot 3 EndRoot
x = 6 and x = –6

Answer 1

12 − x^2 = 0 ⇒ x^2 = 12 ⇒ x = ±√12 = ±2√3.

So the correct choice is: x = 2√3 and x = −2√3.