Question

Calculati: a) (-3)³-3²-(-9)•(10-8); b) 4•[2³+(-8)•3-
(2-7); c) (4-7)³-2³+4³;
d)(-2)³•(-4)-3²•[2-3•(-4+6)];

Answer 1

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