Question

Y = -x3 + 0,5x2 - x+1

Answer 1

У=-3х+1-х+1
у=-4х+2
у= 2 (1-2х)

Answer 2

It seems like you've provided an equation in the form of a polynomial:

Y = -x^3 + 0.5x^2 - x + 1

This is a cubic polynomial because it contains the highest power of x as x^3. If you have any specific questions or tasks related to this polynomial equation, please let me know, and I'd be happy to assist you further.