(1/37+1/41+1/43+1/47+1/53)*(1/41+1/43+1/47+1/53+1/54)-(1/37+1/41+1/43+1/47+1/53+1/54)*(1/41+接上:1/43+1/47+1/53)
问题描述:
(1/37+1/41+1/43+1/47+1/53)*(1/41+1/43+1/47+1/53+1/54)-(1/37+1/41+1/43+1/47+1/53+1/54)*(1/41+
接上:1/43+1/47+1/53)
答
=(1/37+1/41+1/43+1/47+1/53)*(1/41+1/43+1/47+1/53)+(1/37+1/41+1/43+1/47+1/53)*(1/54)-(1/37+1/41+1/43+1/47+1/53)*(1/41+1/43+1/47+1/53)-(1/54)*(1/41+1/43+1/47+1/53)=(1/37+1/41+1/43+1/47+1/53)*(1/54)-(1...