求解答5道初一数学计算题

来源：百度知道 编辑：UC知道 时间：2024/05/31 21:32:30
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

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^8

2,.(X-Y)^M·（X-Y）^N+2·（Y-X）^3
=(X-Y)^M+N+2*[-(X-Y)^3]
=-(X-Y)^M+N+5

3,A^M+N=A^M*A^N=10,
∴A^N=10/A^M=10/2=5

4,.(-0.125)^2007·8^2008 =-8*0.125^2007*8^2007
=-8(0.125*8)^2007
=-8

5'.(3又1/5)^8×(5/16)^8
=(16/5*5/16)^8
=1^8
=1

1.计算[过程]:3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4
=3x^3*(-x^5)-x^5*(-x^3)+x^8
=-3x^8+x^8+x^8
=-x^8

2.(X-Y)^M·（X-Y）^N+2·（Y-X）^3
=(x-y)^m*(x-y)^(n+2)*[-(x-y)^3]
=-(x-y)^(m+n+2+3)
=-(x-y)^(m+n+5)

3.已知A^M+N=10,A^N=2,求A^M的值.

A^(M+N)=A^M*A^N=A^M*2=10

A^M=10/2=5

4.(-0.125)^2007·8^2008
=(-1/8)^2007*8^2008
=-(1/8)^2007*8^2007*8
=-(1/8*8)^2007*8
=-8

5.(3又1/5)^8×(5/16)^8
=(16/5)^8*(5/16)^8
=(16/5*5/16)^8
=1

1.3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4
=3x^3*(-x^5)-x^5*(-x^