Rozwiąż równanie:
X3+5x+x2+5=0
x^3 + 5x + x^2 + 5 = 0
x^3 + x^2 + 5x + 5 = 0
x^2(x+1) + 5(x+1) = 0
(x^2 +1)(x+1) = 0
x^2 +1 > 0
x+1 = 0
x = -1
X³+5x+x²+5=0
x²(x+1)+5(x+1) = 0
(x²+5)(x+1) = 0
x²+5 = 0
x² = -5 brak rozwiązań
i
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x^3 + 5x + x^2 + 5 = 0
x^3 + x^2 + 5x + 5 = 0
x^2(x+1) + 5(x+1) = 0
(x^2 +1)(x+1) = 0
x^2 +1 > 0
x+1 = 0
x = -1
X³+5x+x²+5=0
x²(x+1)+5(x+1) = 0
(x²+5)(x+1) = 0
x²+5 = 0
x² = -5 brak rozwiązań
i
x+1 = 0
x = -1