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〖1/1算式〗
作业:求算式 900×0.25*((0.2-1)+√((0.2-1)^2+(8×0.5×0.2)/(687.4×0.25))) 的值.
题型:数学计算
解:
900×0.25*((0.2-1)+√((0.2-1)^2+(8×0.5×0.2)/(687.4×0.25)))
=900×0.25*((-0.8)+√((0.2-1)^2+(8×0.5×0.2)/(687.4×0.25)))
=900×0.25*(-0.8+√((-0.8)^2+(8×0.5×0.2)/(687.4×0.25)))
=900×0.25*(-0.8+√(-0.8^2+0.8/(687.4×0.25)))
=900×0.25*(-0.8+√(-0.8^2+0.8/171.85))
=900×0.25*(-0.8+√0.644655)
=900×0.25*0.002904
=225*0.002904
=0.6534 答案:900×0.25*((0.2-1)+√((0.2-1)^2+(8×0.5×0.2)/(687.4×0.25)))=0.6534你的问题在这里没有得到解决?请到 热门难题 里面看看吧!