Question

решите примеры подробно

Answer 1

а) (-2/3)²=(-2/3)(-2/3)=4/9

b) (-2/3)³=(-2/3)(-2/3)(-2/3)=-8/27

в) (-0.2)²=(-2/10)(-2/10)=4/100=0.04

г) (-0.5)³=(-5/10)(-5/10)(-5/10)=(-1/2)(-1/2)(-1/2)=-1/8=-0.125