(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 16:46:13
(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝

(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝
(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)
(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)
(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)
(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)
(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝对值等于1的数

(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝
(1)M^2+M-3M^2-5M+2M^2+4
=4-4M=7
(2)(A+B)^2-2(A+B)^2+3(A+B)^2
=2(A+B)^2=50/9
(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2
=-1/2+5A-2/3A^2-A^3=-105,1/2=-211/2
(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5
=-4X^3Y^2+1/2XY-5=12
(5)最后一项(43^2N )是不是4M^2N?
其中M是最小正整数,M=1;N是绝对值等于1的数N=+/-1
2M^2N+2MN-3NM^2-3NM+4M^2N
=3M^2N-NM
=5N=+/-5

m*m-5m-1=0则2m*m-5m+1/m*m 计算：（m+3m+5m+...+2009m)-(2m+4m+6m+...+2008m) (m+3m+5m+...+2009m)-(2m+4m+6m+...2008m) (m+3m+5m+...+2014m)-(2m+4m+6m+...+2013m) (m+3m+5m+...+2013m)-(2m+4m+6m+...+2012m) (m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)= 计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m) m-2m-3m+4m-5m-6m+7m.2004m=? (m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=? m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值 (m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算 合并同类项m-2m+3m-4m+5m-.+2011m-2012m m+3m+5m+...+2011m-2m-4m-...-2010m等于多少? 已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| 计算(m+3m+5m+7m+.+2009m)-(2m+4m+6m+.+2008m) 计算(m+3m+5m+7m+.+2013m)-(2m+4m+6m+.+2012m) (m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=? (m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!