(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算

问题描述:

(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算

(11x9+11)X(111x999+111)x(7x11x13-1001)
=(11x9+11)X(111x999+111)x0
=0