Question

Simplify (4x^2 + 12x – 9) + (7x^2 – x + 3)
Answer

11x^2 + 11x + 6

11x^2 + 11x – 6

11x^2 + 13x + 6

11x^2 + 12x – 6

Answer 1

\[(4x^2 + 12x – 9) + (7x^2 – x + 3)\]
\[4x^2 + 12x – 9 + 7x^2 – x + 3\] group like terms together:
\[4x^2 + 7x^2 + 12x – x + 3– 9 \]
\[11x^2 + 11x – 6 \]