Question

Rozwiąż równania

Answer 1

x³-3x²+4x-12=0

x²(x-3)+4(x-3)=0

(x²+4)(x-3)=0

x=3

 

4x³+4x²-x-1=0

4x²(x+1)-(x+1)=0

(4x²-1)(x+1)=0

(2x-1)(2x+1)(x+1)=0

2(x-½)2(x+½)(x+1)=0

x₁=½

x₂=-½

x₃=-1

 

x³+3x²-4x-12=0

x²(x+3)-4(x+3)=0

(x²-4)(x+3)=0

(x-2)(x+2)(x+3)=0

x₁=2

x₂=-2

x₃=-3