Question

What is the simplified form of this expression? (-3x2 + 2x − 4) + (4x2 + 5x + 9)

Answer 1

Answer:

I hope it helps you......

Answer 2

Answer:

$\large \boxed{\sf \ \ x^2 + 7x + 5 \ \ }$

Step-by-step explanation:

$\mathrm{\sf (-3x^2 + 2x -4) + (4x^2 + 5x + 9)}$

Remove brackets.

$\large{\sf -3x^2 + 2x -4 + 4x^2 + 5x + 9}$

Group like terms.

$\large{\sf -3x^2 + 4x^2 + 2x + 5x + 9 -4}$

Combine like terms.

$\large{\sf x^2 + 7x + 5}$