Vypočítej zpaměti:
\large 12^{2}
\large 12^{2} = 12\cdot 12 = 150
\large 12^{2} = 12\cdot 12 = 130
\large 12^{2} = 12\cdot 12 = 142
\large 12^{2} = 12\cdot 12 = 144
