3.6*42.3*3.75-12.5*0.423*2.8怎样算最简便
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3.6*42.3*3.75-12.5*0.423*2.8怎样算最简便
3.6*42.3*3.75-12.5*0.423*2.8怎样算最简便
3.6*42.3*3.75-12.5*0.423*2.8怎样算最简便
错了,后面三个中小数点有一个错了
假设是3.6*42.3*3.75-12.5*0.423*28
=0.9*42.3*4*3.75-0.125*4*42.3*7
=0.9*42.3*15-0.5*42.3*7
=42.3*(0.9*15-0.5*7)
=42.3*(13.5-3.5)
=42.3*10
=423
令a=√x+√y
a²=x+y+2√xy=1+2√xy
1=x+y>=2√xy
2√xy<=1
所以1+2√xy<=2
即00即√x+√y最大是√2
所以m≥√2
3.6*42.3*3.75-12.5*0.423*28
3.6*42.3*3.75-12.5*0.423*2.8怎样算最简便
3.6×42.3×3.75-12.5×0.423×16 要简便运算!
3.6*42.3*3.75-12.5*14*0.846 如何简便运算
3.6*4203*3.75-12.5-12.5*0.423*28,不能直接算!是3.6*42.3*3.75-12.5*0.423*28
计算3.6乘42.3乘3.75减12.5乘0.432乘28简便计算!
简算题(不要省略步骤)3.6乘42.3乘3.75-12.5乘0.423乘28
3.2×42.3×3.75-12.5×0.423×16 怎么算啊3.2×42.3×3.75-12.5×0.423×16
3.2*42.3*3.75-12.5*0.423*16简便计算
3.6*42.5*3.75--12.5*0.425*28
3.75*8.43*36-12.5*0.843*28简算
计算3.6/0.4-12.5*5
3.6×12.5×0.8/3.6 3.6/0.6/0.5 (12.5+0.125)×83.6×12.5×0.8/3.6 3.6/0.6/0.5 (12.5+0.125)×8.99要简便算式,
(18.4-3.75)/12.5/0.8怎么简便计算
3.75除以1.5×x=12.5 要方程
3.75÷1.5×x=12.5怎么解
3.6-2.8+7.4-7.2 3.75×4.8+62.5×0.48
解方程 12.5-4x=3.6