What is 4x squared minus 3x to the 5th plus x

4x²-3x⁵+x

The only thing we can do here is simplify by finding the GCF (Greatest Common Factor) in this equation. In this case, all three terms have 'x' in common, so we're going to factor that aside:

x(4x-3x⁴+1)

After that, although it's not required, it's best to put the terms in order of their power:

x(-3x⁴+4x+1)

x(-3x⁴+4x+1) is your final answer.