(x^4 + 2x^3 - x + 5) / x^2 - 1

-490

Step-by-step explanation:

= (10+5^2)*((5*-2)+9-3^3)/2

= (10+25)*((5*-2)+9-3^3)/2

= (35)*((5*-2)+9-3^3)/2

= 35*((5*-2)+9-3^3)/2

= 35*((-10)+9-3^3)/2

= 35*(-10+9-3^3)/2

= 35*(-10+9-27)/2

= 35*(-1-27)/2

= 35*(-28)/2

= 35*-28/2

= -980/2

= -490

However, if the workers do outside of what's normally expected, go ahead and tip.