Answer:
x² - 3x - 1
Step-by-step explanation:
First, get rid of the parenthesis you dont need.
3x² - 4x + 5 + (-2x²) + x - 6
Now, you subtract and simplify the variables with the same term.
3x² - 2x² - 4x + x + 5 - 6 (this is for a better visual)
x² - 3x - 1 (final answer!!)