2x^3-7x^2-4x+14=0
x^2(2x - 7) - 2(2x - 7) = 0
(2x - 7)(x^2 - 2) = 0
(2x - 7)(x - √2)(x + √2) = 0
2x - 7 = 0 lub x - √2 = 0 lub x + √2 = 0
2x = 7 lub x = √2 lub x = -√2
x = 3,5
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2x^3-7x^2-4x+14=0
x^2(2x - 7) - 2(2x - 7) = 0
(2x - 7)(x^2 - 2) = 0
(2x - 7)(x - √2)(x + √2) = 0
2x - 7 = 0 lub x - √2 = 0 lub x + √2 = 0
2x = 7 lub x = √2 lub x = -√2
x = 3,5