rozwiąż równanie
x3-3x2-4x+12=0
x4-5x3-2x+10=0
x³-3x²-4x+12=0
x²(x-3)-4(x-3)=0
(x²-4)(x-3)=0
(x+2)(x-2)(x-3)=0
x=-2 lub x=2 lub x=3
x⁴-5x³-2x+10=0
x³(x-5)-2(x-5)=0
(x³-2)(x-5)=0
(x-∛2)(x²+x∛2+∛4)(x-5)=0
Δ=b²-4ac
Δ=∛4-4∛4
Δ=-3∛4
Δ<0
x=∛2 lub x=5
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x³-3x²-4x+12=0
x²(x-3)-4(x-3)=0
(x²-4)(x-3)=0
(x+2)(x-2)(x-3)=0
x=-2 lub x=2 lub x=3
x⁴-5x³-2x+10=0
x³(x-5)-2(x-5)=0
(x³-2)(x-5)=0
(x-∛2)(x²+x∛2+∛4)(x-5)=0
Δ=b²-4ac
Δ=∛4-4∛4
Δ=-3∛4
Δ<0
x=∛2 lub x=5