B=-2×(+7)×(-1)×(-3); C=5×(-8)×(-3)×4; D=(-12)×(-4)×(+3)×(-10); E=(-23)×56×(-42)×0 dau coroanaa​

Răspuns :

B= 2x7x1x3= 42 am făcut regula semnelor (+)x(-)x(-)=(+)

C= 5x8x3x4= 480 (+)x(-)x(-)=+

D= -12x4x3x10= -1440

E= 0