16m÷4n÷2等于
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=2^4m÷2^2n÷2=2^(4m-2n-1)
[5(m+n)2(m-n)]3÷【3(m+n)2(n-m)]2=125(m+n)的6次方(m-n)³÷9(m+n)的4次方(m-n)²=125/9(m+n)²(m-n)如
(2m-n)(m+n)+(m-n)²-(6m³-4m²n)÷2m=2m²+mn-n²+m²-2mn+n²-(3m²-2m
4的m次方*16的n次方=4的m次方*4的2n次方=4的(m+2n)次方∵2m+4n-3=0∴2m+4n=3∴m+2n=3/2∴原式=4的3/2次方=8望采纳再问:下面那道题你会吗,谢谢再答:3^1=
m=3,n=2答案:1/16x=-1,y=1答案:0
∵m-n=2两边乘以-1可得-m+n=-2∵m-n=2两边乘以2可得2m-2n=4∴4-2m+2n=4-(2m-2n)=4-4=0再问:谢谢了!再答:抱歉,错了,m-n=-2,我看成2了,我再给你算一
1+(n-m)/(m+2n)÷【(m²-n²)/(m²+4mn+4n²)】=1+(n-m)/(m+2n)÷【(m+n)(m-n)/(m+2n)²】=1
[(2m-n)÷(m+n)-n÷(m-n)]÷[{m-2n}÷(m+n)]=【(2m-n)(m-n)-n(m+n)】/(m-n)(m+n)x(m+n)/(m-2n)=(2m²-3mn+n
[(m+n)(m-n)-(m-n)^2+2n(m-n)]÷4n=[m²-n²-m²+2mn-n²+2nm-2n²]÷4n=4mn÷4n=m
4-2m+2n=4+2(n-m)=4+2*(-3)=-2
9m=7n,把m当成7,n当成9就行.m+n比m-n=(7+9)比(7-9)=-8
原式=(m²-n²-m²+2mn-n²+2mn-2n²)÷4n=(-4n²+4mn)÷4n=-4n²÷4n+4mn÷4n=-n+m
你好!数学之美团为你解答1+(n-m)/(m+2n)÷(m²-n²)/(m²+4mn+4n²)=1+(n-m)/(m+2n)×(m+2n)²/[(m+
原式=2^8m/2^6n÷2^2m×2^4(n-m+1)=2^(8m-6n)÷2^2m×2^4(n-m+1)=2^(8m-6n-2m+4n-4m+4)=2^(2m-2n+4)
2的m次方乘以2的n次方是2的m+n次方,2的4次方是16,则m+n=4
原式=2n/(m+2n)-m/(m-2n)-4mn/(m²-4n²)=2n/(m+2n)-m/(m-2n)-4mn/(m²-4n²)=[2n(m-2n)-m(m
原式=2(m+n)^5÷[2(m+n)^3]-3(m+n)^4÷[2(m+n)^3]+(-m-n)^3÷[2(m+n)^3]=(m+n)^2-3(m+n)/2-1/2再问:��Ҳ�㵽��һ���ˣ��
m=-n-2mn=-n^2-2n=4n^2+2n+4=0无解
m^2+n^2+2mn=(m+n)^2=6mn,所以m+n=根号六mnm^2+n^2-2mn=(m-n)^2=2mn,所以m-n=根号二mn;所以m^2-n^2=(m+n)(m-n)=二倍根号3mn,
^表示幂原式=[(m-2)^(2+3)]²÷(m-n)^4=[(m-n)^5]²÷(m-n)^4=(m-n)^(5×2)÷(m-n)^4=(m-n)^10÷(m-n)^4=(m-n