/images/1041385860215607387/1284759067029672047/nam-tong-de-nhat-ngoa-de-chuong-1499-thua-dip-dem-ky-tap-toan-tinh-am-toan-that-bat-ngo-gap-nhau-bich-tinh-mat-soi.txt?ex=66e7cc9f&is=66e67b1f&hm=793dce70d3401313c98af29f51e79c8eb2543813ace27405ec04d76a79ee567c&