w(10)=(-10)⁴+5·10³-4·10-10=10000+5·1000-40-10=10000+5000-40-10=14950
w(-1/2)=(1/2)⁴+5·(-1/2)³-4·(-1/2)-10=0,0625+5·(-0,125)+2-10=
=0,0625-0,625+2-10=-8,5625
w(2)=(-2)⁴+5·2³-4·2-10=16+5·8-8-10=16+40-8-10=38
x(-3)=3⁴+5·(-3)³-4·(-3)-10=81+5·(-27)+12-10=81-135+12-10=-52