a)(-3)³-3²-(-9)x(10-8)=
(-27)-9-(-9)x2=
(-27)-9+18=
-36+18=-18
b)4x[2³+(-8)x3-(2-7)]=
4x[8+(-8)x3-(-5)]=
4x(8+(-8)x3+5)=
4x(8-24+5)=
4x(-11)=-44
c)(4-7)³-2³+4³=
(-3)³-8+64=-9-8+64=-17+64=47
d)(-2)³x(-4)-3²x[2-3x(-4)+6)]=
(-8)x(-4)-9x[2-3(2)]=
(-8)x(-4)-9(2-6)=
(-8)x(-4)-9(-4)=
32+36=68
succes