Question

Solve x^2=18 where x is a real number

Answer 1

Answer:

x = ±3√2

or in decimal:

x = ±4.24

Step-by-step explanation:

x² = 18

x = ±√18

= ±√2√9

= ±3√2

Answer 2

Answer:

x = ± 3$\sqrt{2}$

Step-by-step explanation:

Given

x² = 18 ( take the square root of both sides )

x = ± $\sqrt{18}$ = ± $\sqrt{9(2)}$ = ± 3$\sqrt{2}$