两道数学计算题!说得好就悬赏50分!(要过程)
1.(-47.65)*2又6/11+(-37.15)*(-2又6/11)+10.5*(-1又5/11)2.(-2*5)³-(-1又7/9)*(-3/4)的二次方...
1.(-47.65)*2又6/11+(-37.15)*(-2又6/11)+10.5*(-1又5/11)
2.(-2*5)³-(-1又7/9)*(-3/4)的二次方-(-1/0.1)的二次方÷(-0.1)³ 展开
2.(-2*5)³-(-1又7/9)*(-3/4)的二次方-(-1/0.1)的二次方÷(-0.1)³ 展开
1个回答
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1.(-47.65)*2又6/11+(-37.15)*(-2又6/11)+10.5*(-1又5/11)
=(-47.65)*2又6/11+(37.15)*(2又6/11)+10.5*(-1又5/11)
=(-47.65+37.15)*2又6/11++10.5*(-1又5/11)
=(-10.5)*2又6/11+10.5*(-1又5/11)
=-10.5*2又6/11-10.5*(1又5/11)
=-10.5*(2又6/11+1又5/11)
=-10.5*4
=-42
2.(-2*5)³-(-1又7/9)*(-3/4)的二次方-(-1/0.1)的二次方÷(-0.1)³
=-1000+(16/9)*(9/16)+100÷0.001
=-1000+1+100000
=99001
=(-47.65)*2又6/11+(37.15)*(2又6/11)+10.5*(-1又5/11)
=(-47.65+37.15)*2又6/11++10.5*(-1又5/11)
=(-10.5)*2又6/11+10.5*(-1又5/11)
=-10.5*2又6/11-10.5*(1又5/11)
=-10.5*(2又6/11+1又5/11)
=-10.5*4
=-42
2.(-2*5)³-(-1又7/9)*(-3/4)的二次方-(-1/0.1)的二次方÷(-0.1)³
=-1000+(16/9)*(9/16)+100÷0.001
=-1000+1+100000
=99001
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