Question

Simplify.

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

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

B) 7x^3 + 30x^2 + 12x + 9

C) 13x^3 + 8x + 16x^3

D) 13x^4 + 7x^3 + 8x^2 + 9

Answer 1

Hey there!

`\bold{(3x^2 + 2x + 7x^3)+(10x^2 + 6x + 9)}`

Firstly, combine your like terms

1. 
   `\bold{3x^2,10x^2}`
2. 
   `\bold{2x,6x}`
3. 
   `\bold{7x^3}`
4. 
   `\bold{9}`

• 
  `\bold{7x^3*(3x^2+10x^2)+(2x+6x)+(9)}`
• 
  `\bold{3x^2+10x^2=13x^3}`
• 
  `2x+6x=8x`
• 
  `\boxed{\boxed{\bold{Answer:A)7x^3+13x^2+8x+9}}}`
  `\checkmark`

Good luck on your assignment and enjoy your day!

~
`\bold{LoveYourselfFirst:)}`

Answer 2

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

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