Răspuns: -70, 300,900,700,5000,1800,900,8400
Explicație pas cu pas:
a (-2)·(-7).(-5)= (+14)·(-5)= -70
b (-3)·(-4)·(+25)= (+12)·(+25)= +300
c (+5)·(-9)·(-20)= (-45)·(-20)= +900
d (-2)·(+7)·(-50)= (-14)·(-50)= +700
e (-5)·(-8)·(+125)= (+40)·(+125)= +5000
f (-4)·(-50)·(+9)= (+200)·(+9)= +1800
g (-3)·(-75)·(+4)= (+225)·(+4)= +900
h (-5)·(+80)·(-21)= (-400)·(-21)= +8400
P.S. : + · + = +
- · - = +
+ · - = -
- · + = -
Sper ca te-am ajutat!!! Poti sa-mi dai coroana??
