已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/21 16:42:33
已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值已知2m
已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值
已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值
已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值
=5n(2m-n)²+2(2m-n)³
=(2m-n)²(5n+4m-2n)
=(2m-n)²(4m+3n)
=3²*1
=9
5n(2m-n)²-2(n-2m)³
=5n(2m-n)²-(-1)³*2*(2m-n)³
=(2m-n)²(5n+4m-2n)
=(2m-n)²(4m+3n)
=3²*1
=9
原式=5n(2m-n)^2+2(2m-n)^3 提出公因式 (2m-n)^2
=(2m-n)^2×(5n+4m-2n)
=(2m-n)^2×(4m+3n)
代入 =9×1=9
5n(2m-n)²-2(n-2m)³
=5n(2m-n)²-(-1)³*2*(2m-n)³
=(2m-n)²(5n+4m-2n)
=(2m-n)²(4m+3n)
=3²*1
=9
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
已知m/n=5/3 求(1/m+n+1/m-n)÷1/n-n/m-n÷m+n/n的值,今天就要
已知:m/n=5/3,求(1/m+n+1/m-n)÷1/n-n/m-n÷m+n/n的值
已知2m-n=3,4m+3n=1,求5n(2m-n)^2-2(n-2m)^3的值式子
已知2m-n=3,4m+3n=1,求5n(2m-n)^2-2(n-2m)^3的值
已知2m-n=3,4m+3n=1,求5n(2m-n)²-2(n-2m)³的值
已知m/n=5/3,求m/(m+n)+m/(m-n)-n平方/(m平方-n平方)
已知n/m=3/5,求m+n/m
已知m-2n/2m+n=5,求代数式3(m-2n)/2m+n-15(2m+n)/m-2n-2
已知m=5 4/7,n=4 3/7, 求代数式[-7/2(m+n)]^3×(m-n)×[-2(m+n)(m-n)]^2的值
已知(4M-5N+17)*(4M-5N+17)+(7M-3N+1)*(7M-3N+1)=0,求M,N的值
已知m=1/3,n=1/27,求m-n/根号m-根号n+(m+4n-4根号mn)/根号m-2根号n
已知2^m=4^n+1,27^n=3^m+1.求m+n+5的平方根
已知:n分之m=3分之5,求(m+n分之m) + (m-n分之m) - (m方-n方,分之n方) 我要详解=[2(m/n)^2-1]/[(m/n)^2-1]
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
已知|m-2|+(n+1/5)^2=0,求m-(m^2n+3m-4N)+3(2nm^2-3n)的值
(m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1
已知|m-2|+(n+1/5 )²=0,求m-(m²n+3m-4n)+3(2nm²-3n)的值