Question

Solve the equation.
c2 = 4

Answer 1

+/- 2

Explanation:

+/- 2 = sqrt(4)

2×2=4

sqrt is square root

Answer 2

c = ±2

Explanation:

c^2 =4

Take the square root of each side

sqrt(c^2) = ±sqrt(4)

c = ±2