Respuesta :

wegnerkolmp2741o

Answer:

A) 7x^3 + 13x^2 + 8x + 9

Step-by-step explanation:

(3x^2 + 2x + 7x^3) + (10x^2 + 6x + 9)

I like to line them up vertically

7x^3 +3x^2 + 2x

+       (10x^2 + 6x + 9)

-----------------------------------

7x^3 +13x^2 +8x +9

Amphitrite1040

Hey there!

[tex]\bold{(3x^2 + 2x + 7x^3)+(10x^2 + 6x + 9)}[/tex]

Firstly, combine your like terms

  1. [tex]\bold{3x^2,10x^2}[/tex]
  2. [tex]\bold{2x,6x}[/tex]
  3. [tex]\bold{7x^3}[/tex]
  4. [tex]\bold{9}[/tex]
  • [tex]\bold{7x^3\times(3x^2+10x^2)+(2x+6x)+(9)}[/tex]
  • [tex]\bold{3x^2+10x^2=13x^3}[/tex]
  • [tex]2x+6x=8x[/tex]
  • [tex]\boxed{\boxed{\bold{Answer:A)7x^3+13x^2+8x+9}}}[/tex] [tex]\checkmark[/tex]

Good luck on your assignment and enjoy your day!

~[tex]\bold{LoveYourselfFirst:)}[/tex]

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