计算:1 3n分之2M乘以(P分之3n)的平方
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(m-2n+3p)(m+2n+3p)=[(3p+m)+2n][(3p+m)-2n]=(3p+m)^2-(2n)^2=9p^2+6pm+m^2-4n^2
请表述清楚.再问:2m²n5p²q5mp——×——÷——3pq²4m²n3q再答:2m分之1再问:麻烦,写下过程,谢谢再答:m方n与m方n相约,2与4约掉,3p
=4分之1乘以括号8分之3加8分之5减1,等于0=20分之17乘以括号3分之2加3分之1,再减2分之1=20分之7
m和n互为相反数,m+n=0,m=-n,n不等于0,则m也不等于0,mn²+m²n-2n/m=mn(n+m)-2n/(-n)=mn(0)+2=0+2=2
因为(M^2-N^2)=(M+N)(M—N)所以原式=[(M+N)/(M-N)]*(M-N)^2/[(MN)^2(M+N)]=(M-N)/(NM)^2
=(2m+3n-p+2m-3n+p)(2m+3n-p-2m+3n-p)=4m(6n-2p)=24mn-8p再问:抱歉啊,那个符号可能不太明显,两个算式之间有一个减号。再答:相当于公式:A²-
(2m+n)的平方=4M*M+4MN+N*N(2m-n)的平方=4M*M-4MN+N*N(2m+n)*(2m-n)=(4M*M+4MN+N*N)*(4M*M-4MN+N*N)=16M*M*M*M-8M
2n²/3m*(3m²/4n)=mn/2再问:areyou确定?
原式=[(m+2n)-p]2,=(m+2n)2-2p(m+2n)+p2,=m2+4mn+4n2-2pm-4pn+p2.
2m/3n*(3n/p)^2/(mn/p)=2m/3n*9n^2/p^2*p/mn=6/p
|m|/m+|n|/n+|p|/p=1m,n,p为两正一负.mnp
(m-2n+p)(m+2n-p)=[m-(2n-p)][m+(2n-p)]=m^2-(2n-p)^2=m^2-4n^2+4np-p^2(m-2n+p)(m+2n+p)=[(m+p)-2n][(m+p)
(2m+n-p)(2m-n+p)=[2m-(p-n)][2m+(p-n)]=(2m)^2-(p-n)^2=4m^2-p^2-n^2+2np不明白欢迎来追问!多谢了!再问:你确定这是最简的?再答:对啊这
1×2分之1=1-2分之12×3分之1=2分之1-3分之1以此类推=1-2分之1+2分之1-3分之1+3分之1-4分之1+……+2011分之1-2012分之1=1-2012分之1=2012分之2011
(m/n+n)(m/n+n)-(m/2-n)(m/2-n)=[(m/n+n)+(m/2-n)][(m/n+n)-(m/2-n)]=m*m(1/n/n-1/4)
2分之1m乘以mn乘以m减去m乘以n乘以m的二次方加上2分之1m的二次方乘以n乘以m=1/2m×mn×m-mn×m²+1/2m²n×m=1/2m³n-m³n+1
(m-2n+3p)(m+2n+3p)=m(m+2n+3p)-2n(m+2n+3p)+3p(m+2n+3p)=m²+2mn+3mp-2nm-4n²-6np+3pm+6pn+9p
(2分之1m+n)乘以(m-2n)=(m+2n)(m-2n)/2=(m²-4n²)/2=m²/2-2n²再问:(m+2n)(m-2n)/2为什么n扩大了两倍第一
按照题意,有:m*(15/n)>m,且m*(13/n)1,且13/nn>13,因n为自然数,n只能为14