Respuesta :

SuperStarlord24

Answer:

-15x^5 + 26x^4 - 12x^3 + 35x^2 - 33x - 3

Step-by-step explanation:

(5x^3 - 2x^2 + 3x - 8) + (-3x^2 + 4x + 1)

do foil but with extra terms

-15x^5 + 20x^4 + 5x^3

+6x^4 - 8x^3 - 2x^2

-9x^3 + 12x^2 + 3x

+ 24x^2 - 32x - 8

combine like terms

(-15x^5 + 26x^4 - 12x^3 + 34x^2 - 29x - 8) - (4x - x^2 + 5) or -4x + x^2 - 5

-15x^5 + 26x^4 - 12x^3 + 35x^2 - 33x - 3

semsee45

Answer:

[tex]x^3-4x^2+3x-12[/tex]

Step-by-step explanation:

[tex](5x^3-2x^2+3x-8)-(3x^2-4x-1)\\\implies 5x^3-2x^2+3x-8-3x^2+4x+1\\\implies 5x^3-5x^2+7x-7[/tex]

[tex](x^3-5x^2+7x-7)-(4x-x^2+5)\\\implies x^3-5x^2+7x-7-4x+x^2-5\\\implies x^3-4x^2+3x-12[/tex]

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