Question

Find the solutions x^2=18

Answer 1

Answer:

x₁ = -3√2

x₂ = 3√2

Step-by-step explanation:

x² = 18

x ± 3√2

x = -3√2

x = 3√2

Hope this helped! :)

Answer 2

Answer:

                x₁ = -3√2 ,   x₂ = 3√2  

Step-by-step explanation:

x² = 18     ⇔    x = √18    or   x= -√18

√18 = √[9•2] = √9•√2 = 3•√2 = 3√2