【数学简便方法

问题描述:

【数学简便方法
(1) (-9)^3*(-2/3)^3*(1/3)^3
(2)-8^2001*(-0.125)^2000+(-0.25)^3*2^6
(3) (0.5*11/3)^10*(-2*3/11)^1
(4) (a-1)(a^4+a^3+a^2+a+1)
(3)(0.5*11/3)^10*(-2*3/11)^11

(1) (-9)^3*(-2/3)^3*(1/3)^3=[-9×(-2/3)*(1/3)]³=2³=8(2)-8^2001*(-0.125)^2000+(-0.25)^3*2^6=-8²ºº¹×(-1/8)²ººº+(-1/4)³×4³=-8×(8×1/8)...(3)(0.5*11/3)^10*(-2*3/11)^11【呵呵,对不起,打错了】(3)(0.5*11/3)^10*(-2*3/11)^11=(-1/2×11/3×2×3/11)¹º×(-2×3/11)=(-1)¹º×(-2×3/11)=-6/11