Question

Rozwiąż równanie trzeciego stopnia:
2x3 - 18x = 0

Answer 1

2x³ - 18x = 0
2x(x² - 9) = 0
2x(x-3)(x+3)=0

x₁ = 0
x₂ = 3
x₃ = -3

Answer 2

2x³-18x = 0
2x(x² - 9) = 0
2x(x-3)(x+3) = 0
2x = 0
x₁ = 0

x-3 = 0
x₂ = 3
x+3 = 0
x₃ = -3

x₁ = 0 x₂ = 3 x₃ = -3

Answer 3

2x³-18x=0
2x(x²-9)=0
2x(x-3)(x+3)=0
x=0∨x=3∨x=-3