计算m²-4分之m²-6m 9
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=[m/(m+n)(m-n)-1/(m+n)]×(n-m)/mn=(m-m+n)/(m+n)(m-n)×[-(m-n)]/mn=-1/m(m+n)=-1/(m²+mn)
您好:(m+4n)(m-n)-6(m+2n)(m-3n)=m²+3mn-4n²-6m²+6mn+36n²=-5m²+9mn+32n²不明白,
m/(m/5+m/3)*(a/3-1/2a)*4a=1/1/5+1/3)*(1/3-1/2)*4=15/8*(-1/6)*4=-5/4
2m+6/m²-4m+4·1/m+3·(m-2)(m+3)/m+3=2(m+3)/(m-2)·1/m+3·(m-2)=2如追加其它问题,采纳本题后点击想我求助,
透明的鱼吹泡泡:2/(m-3)-(1-m)/(3-m)=2/(m-3)+(1-m)/(m-3)=(2+1-m)/(m-3)=(3-m)/(m-3)=-1
我不太清楚你的题目哦是不是这样m^(-m)-((m^(-4))/6=0如果是这样很难计算哦如果是m^2-m-(m^2-4)/6的话就容易
【16-M^2分之16+8M+M^2】除以【M-4分之2m+8】乘以【m-2分之m+2】=【(4+m)(4-m)分之(4+m)²】乘以【2(m+4)分之(m-4)】乘以【m-2分之m+2】=
1、=a/(a-4)-4/(a-4)=(a-4)/(a-4)=12、=4/(m+2)(m-2)-(m+2)/(m+2)(m-2)=(4-m-2)/(m+2)(m-2)=-(m-2)/(m+2)(m-2
原式=(1+2015)m/(2×2)-(2+2014)m/(2×2)=0
2(m+3)分之m-3
前面括号和后面括号里是:各有(1+2009)/2=1005项去掉括号,写成1-2+3-4+5-6.+2009-2010相当于1005个-1相加,最后是-1005
1+m+m(1+m)+m(1+m)^2+m(1+m)^3=(1+m)[1+m+m(1+m)+m(1+m)^2]=(1+m){(1+m)[1+m+m(1+m)]}=(1+m)^4
(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m)=2010m/2=1005m
2010m/2=1005m(m+3m+5m+…+2011m)-(2m+4m+6m+…+2010m)=(m+3m+5m+…+2011m)-2m-4m-6m-...-2010m=m-2m+3m-4m+5m
=(m-2m)+(3m-4m)+.(一共2010/2=1005项)+2011m=-1005m+2011m=1006m
原式=(m-2m)+(3m-4m)+……+(2013m-2014m)=(-1m)×2014/2=-1007m数学来吧请及时采纳,(点击我的答案下面的【满意答案】图标)是我前进的动力!你的采纳也会给你带
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(5m-4)/2(m-2)=(2m+5)/3(m-2)-1/23(5m-4)=2(2m+5)-3(m-2)15m-12=4m+10-3m+614m=28m=2检验:m=2是增根∴m=2是方程的解
(1)M/(5分之M+3分之M)=M/(M/5+M/3)=M/[(8/15)M]=15/8(2)[3/A-1/(2A)]*4A=[(3-1/2)/A]*4A=(3-1/2)*4=12-2=10