Ths L\u00ea \u0110\u1ee9c Thu\u1eadn, Ph\u00f2ng GD – \u0110T qu\u1eadn Ho\u00e0n Ki\u1ebfm, H\u00e0 N\u1ed9i v\u00e0 TS \u0110\u00e0o Tr\u1ecdng Quy\u1ebft, H\u1ecdc vi\u1ec7n KTQS s\u1ebd h\u01b0\u1edbng d\u1eabn c\u00e1c em gi\u1ea3i b\u00e0i to\u00e1n b\u1eb1ng c\u00e1ch l\u1eadp h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh.<\/strong><\/p>\n