Rozwiąż równanie:
x^4 + 2x^3 - 4x^2 - 8x = 0
x^3(x + 2) - 4x(x + 2) = 0
(x + 2)(x³ - 4x) = 0
x(x + 2)(x² - 4) = 0
x = 0 lub x + 2 = 0 lub x² - 4 = 0
x = -2 x² = 4
x = 2 lub x = -2
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x^4 + 2x^3 - 4x^2 - 8x = 0
x^3(x + 2) - 4x(x + 2) = 0
(x + 2)(x³ - 4x) = 0
x(x + 2)(x² - 4) = 0
x = 0 lub x + 2 = 0 lub x² - 4 = 0
x = -2 x² = 4
x = 2 lub x = -2