Example: Add (2x²-3) and (7x³-4x+1).

Problem

Simplify.
left parenthesis, minus, 4, x, start superscript, 4, end superscript, plus, x, start superscript, 2, end superscript, minus, 4, right parenthesis, plus, left parenthesis, 5, x, start superscript, 2, end superscript, minus, 4, right parenthesis
Please choose from one of the following options.