﹣2×﹙0.1﹚的立方×﹙﹣10﹚的平方+﹙﹣0.8﹚

问题描述:

﹣2×﹙0.1﹚的立方×﹙﹣10﹚的平方+﹙﹣0.8﹚

﹣2×﹙0.1﹚的立方×﹙﹣10﹚的平方+﹙﹣0.8﹚
=-2×0.01×(-100)-0.8
=-0.02×(-100)-0.8
=2-0.8
=1.2