[Gi\u1ea3i To\u00e1n 10] Ch\u01b0\u01a1ng 3: Ph\u01b0\u01a1ng tr\u00ecnh. H\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh\/ B\u00e0i 3: Ph\u01b0\u01a1ng tr\u00ecnh v\u00e0 h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh b\u1eadc nh\u1ea5t nhi\u1ec1u \u1ea9n<\/a><\/blockquote>