1.计算[过程]:3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4

题目

1.计算[过程]:3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4
2.(X-Y)^M·（X-Y）^N+2·（Y-X）^3
3.已知A^M+N=10,A^N=2,求A^M的值.
4.(-0.125)^2007·8^2008
5.(3又1/5)^8×(5/16)^8

答案

1.计算[过程]:3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4 =-3X^8+X^8+X^8=-X^82,.(X-Y)^M·（X-Y）^N+2·（Y-X）^3 =(X-Y)^M+N+2*[-(X-Y)^3]=-(X-Y)^M+N+53,A^M+N=A^M*A^N=10,∴A^N=10/A^M=10/2=54,.(-0.125)^2007·8...