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Choose the correct sum of the polynomials (3x3 − 5x − 8) + (5x3 + 7x + 3).
8x3 + 2x + 5
2x3 − 12x − 11
2x3 + 12x − 5
8x3 + 2x − 5

Respuesta :

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3x3+5x3+(-5x)+7x+(-8)+3
8x3+2x-5

Answer with explanation:

The two polynomials whose sum we have to find is

    [tex]\Rightarrow (3x^3 − 5x - 8) + (5x^3 + 7x + 3)\\\\\text{Adding like terms}\\\\\Rightarrow 3x^3+5x^3 - 5x+7x - 8+3\\\\\Rightarrow 8x^3+2x-5[/tex]

Option D