3m^2-4(-2n^2+4m^2)-2(7n^2+5m^2) 其中m+1 n=-1(先化简,再求值)过程!
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/14 06:27:15
3m^2-4(-2n^2+4m^2)-2(7n^2+5m^2) 其中m+1 n=-1(先化简,再求值)过程!
3m^2-4(-2n^2+4m^2)-2(7n^2+5m^2) 其中m+1 n=-1(先化简,再求值)过程!
3m^2-4(-2n^2+4m^2)-2(7n^2+5m^2) 其中m+1 n=-1(先化简,再求值)过程!
3m^2-4(-2n^2+4m^2)-2(7n^2+5m^2)
=3m^2+8n^2-16m^2-14n^2-10m^2
=-23m^2-6n^2
m=+1 n=-1
-23-6=-29
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
4m(m-n)^2+4n(n-m)^3
(m-n)2(n-m)3(n-m)4化简
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
4m(m-m)-2n(n-m)
(m-2n)(2n+m)-(-3m-4n)(4n-3m)=
(3m-4n)(4n+3m)-(2m-n)(2m+n)
[2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3]
计算(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n),
(n/m+n/2m^2)*4m/n^2
4m^2(m+n)-9n^2(m+n)
因式分解4m^2(m-n)+4n(n-m)
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
2(m+n)2-(m+n)+4(m+n)-(m+n)2+3(m+n)2 化简求值
2(m+n)2²-(m+n)+4(m+n)-(m+n)²+3(m+n)² 计算