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a) 3x³yz²=3*-27*-1*4=324
b)5xy³z⁴=5*-3*-1*16=240
c)2x(y-3z)-3z(x+y³)=-6(-1+6)+6(-3-1)=-30-24=-54
d)xy²-x²z-xyz=-3*1+1*-2-(-3*-1*-2)=-3-2 +6=7
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a) 3x³yz²=3*-27*-1*4=324
b)5xy³z⁴=5*-3*-1*16=240
c)2x(y-3z)-3z(x+y³)=-6(-1+6)+6(-3-1)=-30-24=-54
d)xy²-x²z-xyz=-3*1+1*-2-(-3*-1*-2)=-3-2 +6=7