(x²+3x+2)+(x³-2x-3)=

[tex] {(x}^{2} + 3x + 2) + ({x}^{3} - 2x - 3) = {x}^{3} + {x}^{2} + 3x - 2x + 2 - 3 = {x}^{3} + {x}^{2} + x - 1[/tex]
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