Respuesta :

Answer:

11x^2 + 11x - 6

Step-by-step explanation:

  1. Remove the parenthesese.
  2. Add like terms, 4x^2 and 7x^2.
  3. After that, subtract x from 12x, that's 11x.
  4. then add -9 and 3, and that's -6.

Then you're left with 11x^2 + 11x - 6

I hope this helps!

imlittlestar

Answer:

The correct answer is 11x²  + 11x - 6

Step-by-step explanation:

The given expression is,

(4x² + 12x - 9) + (7x² - x + 3)

Simplify the given expression

(4x² + 12x - 9) + (7x² - x + 3) = 4x² + 12x - 9 + 7x² - x + 3

= 4x² + 7x²  + 12x - x - 9 + 3

= 11x²  + 11x - 6

Therefore the simplified form of given expression is 11x²  + 11x - 6

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