(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=最好能有步骤

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(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=最好能有步骤(1+0.97+0.215)×(0.97+0.215+

(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=最好能有步骤
(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=
最好能有步骤

(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=最好能有步骤
设0.97+0.215=A
=(1+A)(A+0.567)-(1+A+0.567)A
=A+0.567+A^2+0.567A-A-A^2-0.567A
=0.567

减号后面那个括号里应该是"1+0.97"吧?这样的话,
设A=0.97+0.215
则原式=(1+A)*(A+0.567)-(A+1+0.567)*A
=A+A2+0.567A+0.567-A2-A-0.567A
==.567

(1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.9+0.215+0.567)×(0.97+0.215)=最好能有步骤 (1+0.97+0.215)×(0.97+0.215+0.567)-(1+0.97+0.215+0.567)×(0.97+0.215)求这道题的简便运算?还有1题目求简便运算,如下;2004×2004+2003×2003-2004×2003-2003×2002 (1+0.97+0.215)*(0.97+0.215+0.567)-(1+0.97+0.215+0.567)*(0.97+0.215)=?这题的答案哪里是0?我晕!下面一个小朋友错了! (0.97+0.97*2+0.97)*2.5(简算) 0.97x100.1的简便计算方法 0.97x100.1的简便计算方法 1+0.99-0.98-0.97+0.96+0.95-0.94-0.93+.+0.04+0.03-0.02-0.01=( ) (1.5+0.31+0.97)*(0.31+0.97+0.82)-(1.5+0.31+0.97+0.82)*(0.31*0.97)简算(1.5+0.31+0.97)*(0.31+0.97+0.82)-(1.5+0.31+0.97+0.82)*(0.31+0.97)简算,上面写错啦 (27*1.06+54*0.97)除以3的简便算法 0.1+0.3+0.5+0.7.+0.97+0.99=?(列脱式计算) 把0.97保留到千分位是( ). IF(合格率>0.97,(合格率-0.97)*100*5,IF(”合格率 功率因数为何不宜超过0.97 0.97M等于多少KB 2.65-(1.65-0.97)怎么算 某同学用一把刻度均匀的米尺测得方桌边长0.97m,把该尺与标准尺校对,发现尺的实际长度是1.003m,实际长度设实际长度为x是1:1.003=x:0.97还是1:1.003=0.97:x1.003=0.97:x可我觉得是1:1.003=x:0.97为 百分数化小数 小数化百分数 、 (1)把小数化成百分数:0.97 0.08 0.005 0.132 (2)把百分数化成小数:97% 8% 0.5% 13.2% 用简便运算的方法算以下几题~(1)0.99+0.98-0.97-0.96+0.95+0.94-0.93-0.92+……-0.08+0.07+0