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Neuron
If you would like to solve (5 * x^3 + 3 * x^2 - 5 * x + 4) + (8 * x^3 - 5 * x^2 + 8 * x + 9), you can calculate this using the following steps:

(5 * x^3 + 3 * x^2 - 5 * x + 4) + (8 * x^3 - 5 * x^2 + 8 * x + 9) = 5 * x^3 + 8 * x^3 + 3 * x^2 - 5 * x^2 - 5 * x + 8 * x + 4 + 9 = 13 * x^3 - 2 * x^2 + 3 * x + 13

The correct result would be 13 * x^3 - 2 * x^2 + 3 * x + 13.
Leader
[tex](5x^3+3x^2-5x+4)+(8x^3-5x^2+8x+9)=\\\\13x^3-2x^2+3x+13[/tex]

[tex]\sf\ Answer:\ {\boxed{13x^3-2x^2+3x+13}[/tex]

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