Question

Find the solutions to x² = 18.

A. x = +6√3
B. x = +2√3
C. x= 13√6
D. x = ±3-√2

Answer 1

D. x = +-3*sqrt(2)

Explanation:

x^2 = 18

x = +-sqrt(18)

x = +-sqrt(9 * 2)

x = +-sqrt(3^2 * 2)

x = +-3*sqrt(2)