计算一题,不难
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计算一题,不难
计算一题,不难
计算一题,不难
原式=0.5+√(49/16)-|-1/2|-7/4
=1/2+7/4-1/2-7/4
=0
原式=0.5+7/4-1/4-7/4
=0.5-1/4
=1/4
原式
=0.5+7/4+1/2-7/4
=1
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³√0.125+√49/16-³√(-1/8)²+(-7/4)
=0.5+7/4-1/4-7/4
=0.5-0.25
=0.25
原式=(1/8)开三次方+根号3/4+(1/64)开三次方+(-7/4)
=1/2+根号3/4+1/4-7/4
=1+根号3/4
原式=0.5+7/4+1/4-7/4=3/4