Question

$(2n - 5) - (3n^2 - 2n + 9)$

Explanation:

Step1: Remove parentheses, distribute negative sign

$(2n - 5) - 3n^2 + 2n - 9$

Step2: Combine like terms (linear terms)

$-3n^2 + (2n + 2n) + (-5 - 9)$

Step3: Simplify each term group

$-3n^2 + 4n - 14$

Answer:

$-3n^2 + 4n - 14$