X3+2x-9x-18=0 help me плизз

[latex]x^{3} + 2x^{2} -9x-18=0 x^{3} -9x+ 2x^{2} -18=0 x(x^{2} -9)+2( x^{2} -9)=0 (x-3)(x+3)(x+2)=0 [/latex] x-3=0 x₁=3 x+3=0 x₂=-3 x+2=0 x₃=-2