(-2分之1)-2×根号2≈()(根号2≈1.41,结果精确到0.1)
问题描述:
(-2分之1)-2×根号2≈()(根号2≈1.41,结果精确到0.1)
答
=-0.5-2×1.41
=-0.5-2.82
=-3.3