已知M=3a^3-10a^2-5,N=-2a^3+5-10a,P=7-5a-2a^2,求M+2N-3P和M-3N+2P的

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已知M=3a^3-10a^2-5,N=-2a^3+5-10a,P=7-5a-2a^2,求M+2N-3P和M-3N+2P的值

M+2N-3P
=2(3a³-10a²-5)+2(-2a³+5-10a)-3(7-5a-2a²)
=6a³-20a²-10-4a³+10-20a-21+15a+6a²
=2a³-14a²-5a-21
M-3N+2P
=2(3a³-10a²-5)-3(-2a³+5-10a)+2(7-5a-2a²)
=6a³-20a²-10+6a³-15+30a+14-10a-4a²
=12a³-24a²+20a-11

已知M=3a^3-10a^2-5,N=-2a^3+5-10a,P=7-5a-2a^2,求M+2N-3P和M-3N+2P的已知a^m=p,a^n=q,求a^2m+3n的值设M=3a^3-10a^2-5,N=-2a^3+5-10a,P=7-5a-2a^2,求2M+3N-3P的值 a^m-2n-3p等于设M=3a^3-10a^2-5,N=-2a^3+5-10a,P=7-5a-2a^2,求m+2n-3p 已知三个非零向量m,n,p不共面,a=m+2n+3p,b=3m+2n+p,c=7m+8n+9p,求证：a,b,c三个向量已知A^M=3,A^N=5,求A^M+2N的值已知m,n.p都是整数,且|m-n|^3+|p-m|^5=1,求|p-m|+|m-n|+2|n-p|的值已知a的m次方=2,a的n次方=5,a的p次方=-2,求a的 5m+2n-3p次方的值如果a的m次方=q,a的n次方=p（m、a为正整数）,求a的3m次方,a的2n次方,a的3m+2n次方的值 a^m=3,a^n=5求a^3m-2n的值如果a的m次方=p,a的n次方=q(m,n是整数),那么a的3m+2n次方＝