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b) (-5)*[3*(-2)-(-8)*(-1)]=(-5)*[-6-8]=(-5)*(-14)=70
c) (-6)²-(-7)²=36-49=-13
(-5)*[3*(-2)-(-8)*(-1)]=(-5)*[-6-8]= -5*(-14)=70
(-6)²-(-7)²=36-49= -13