Question

a x^3 + 2x^2 - 16x -32 = 0 b -12x^3+x^2+x=0 Rozwiąż Równanie !!!!! Pliss POMOCY !!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

 

x - 4 = 0   v   x + 4 = 0   v    x+2=0

x = 4   v    x = -4   v   x = -2

 

Z={-4,-2,4}

 

 

x = 0   v   12x² - x - 1= 0

                Δ = 1-4*12*(-1) = 1 + 48 = 49

                x₁=(1 + 7)/24 = 8/24=1/3

                x₂ = (1 - 7)/24 = -6/24 = -1/4