已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/05 23:19:58
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值已知,4
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值
4m+n-2m+3n=2m+4n=80
m+2n=40
4m+n+2m-3n=6m-2n=100
3m-n=50
(m+2n)²-(3m-n)²=40²-50²=-900
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值
已知,4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²的值.
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
已知4m+n=90,2m-3n=10,求(m+2n)^2-(3m-n)^2的值
已知4m+n=90,2m-2n=10,求(m+2n)^2-(3m-n)^2的植
已知4M+N=90,2M-3N=10求(M+2N)D的平方-(3M-N)的平方的值是多少?
已知4m+n=90,2m-3n=10,求(m+2n)²-(3m-n)²
(m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
已知m=√n-4 + √4-n +2,求2m+3m的平方根
已知3m+4n+2=4m+3n,则m >n?
已知m²+n²=10,m*n=4,则代数式-m^3n-n^3m=
已知M.N是整数,且M平方+3N平方+5〈2N(4-M)求M.N
已知m=4/7,n=3/7,求[-2(m+n)(m-n)]的2次方×(m+n)的2次方×7/2(m-n)
100m的4次方n的2次方= ( )的2次方已知4m+n=90,2m-3n=10,求(m+2n)的2次方-(3m-n)的2次方
4m(m-n)^2+4n(n-m)^3
[(m-n)^2*(m-n)^3]^2/(m-n)^4