Question

Преобразуйте в многочлен выражение -(u-5)^3-2(u-3)(u-1)

Answer 1

1) 2(u-3)(u-1)=2*(u²-u-3*u+3)=2*(u²-4*u+3)=2*u²-8*u+6.
2) -(u-5)³=-1*(u-5)²*(u-5)=(5-u)*(u²-10*u+25)=5*u²-50*u+125-u³+10*u²-25*u=-u³+15*u²-75*u+125.
3) -u³+15*u²-75*u+125*-2u²+8*u-6=-u³+13*u²-67*u+119.