Vypočítej zpaměti:
\large 19^{2}
\large 19^{2} = 19\cdot 19 = 381
\large 19^{2} = 19\cdot 19 = 371
\large 19^{2} = 19\cdot 19 = 361
\large 19^{2} = 19\cdot 19 = 351
