x(x^2 - 1) 〓 3 + x^3
x^3 - x 〓 3 + x^3
x^3 - x^3 - x〓 3
- x 〓 3
x 〓 - 3
x^3-x-3-x^3=0=>x+3=0=>x=-3
X3-1x=3+x3
X3-x3-1x=3
-1x=3
-x=3
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x(x^2 - 1) 〓 3 + x^3
x^3 - x 〓 3 + x^3
x^3 - x^3 - x〓 3
- x 〓 3
x 〓 - 3
x^3-x-3-x^3=0=>x+3=0=>x=-3
X3-1x=3+x3
X3-x3-1x=3
-1x=3
-x=3