Rozwiąż równanie:
5x³ + 45x - 4x² - 36 = 0
5x(x² + 9) - 4(x² + 9) = 0
(5x - 4)(x² + 9) = 0
5x - 4 = 0 ∨ x² +9 = 0
5x = 4 ∨ x² = -9
x = 4/5 ∨ x - sprzeczność
x = 4/5
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5x³ + 45x - 4x² - 36 = 0
5x(x² + 9) - 4(x² + 9) = 0
(5x - 4)(x² + 9) = 0
5x - 4 = 0 ∨ x² +9 = 0
5x = 4 ∨ x² = -9
x = 4/5 ∨ x - sprzeczność
x = 4/5