1/2÷[(-0.5)³-(-1.5)²]+1又1/2÷3/4×(-2)
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1/2÷[(-0.5)³-(-1.5)²]+1又1/2÷3/4×(-2)
=1/2÷(-0.125-2.25)+3/2×4/3×(-2)
=1/2÷(-17/8)+1/2×(-2)
=-4/17-1
=-21/17
不懂可追问,有帮助请采纳,谢谢!
=1/2÷(-0.125-2.25)+3/2×4/3×(-2)
=1/2÷(-17/8)+1/2×(-2)
=-4/17-1
=-21/17
不懂可追问,有帮助请采纳,谢谢!
更多追问追答
追问
3/2÷3/4=3/2×4/3=2不是吗
追答
1/2÷[(-0.5)³-(-1.5)²]+1又1/2÷3/4×(-2)
=1/2÷(-0.125-2.25)+3/2×4/3×(-2)
=1/2÷(-17/8)+2×(-2)
=-4/17-4
=-4又4/17
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