几道初一的题(是积的乘方和幂的乘方).
问题描述:
几道初一的题(是积的乘方和幂的乘方).
①-8^1994(1994次方,以下都这样表示)×(-0.125)^1995
②[(-X)^2N]^2×X^M+(-2X^M)^3
③{-A^3×[-a^2(-a^4)^2]^2}^2
④3(X^2)^2×(X^2)-(X^5)^2×(X^2)^2
答
①-8^1994(1994次方,以下都这样表示)×(-0.125)^1995 =8^1994*0.125^1994*0.125=(8*0.125)^1994*0.125=1^1994*0.125=0.125②[(-X)^2N]^2×X^M+(-2X^M)^3 =[x^2n]^2*x^m-8x^3m=x^(4n+m)-8x^3m③{-A^3×[-a^2(-a^...