-(3-5)+(-2)2×5+(-2)3.
问题描述:
-(3-5)+(-2)2×5+(-2)3.
答
原式=-(-2)+4×5-8
=2+20-8
=14.
-(3-5)+(-2)2×5+(-2)3.
原式=-(-2)+4×5-8
=2+20-8
=14.