T\u1ed5ng h\u1ee3p tr\u01b0\u1eddng v\u00e0 chuy\u00ean ng\u00e0nh \u0110\u1ea1i h\u1ecdc x\u00e9t tuy\u1ec3n kh\u1ed1i C<\/a><\/blockquote><\/iframe>