Question

Упрости сумму многочленов $(22\frac{4}{5} z - \frac{2}{14} z^{2} ) + (\frac{1}{14} z^{2} - 1\frac{4}{5}z)$

Answer 1

$(22\frac{4}{5}z-\frac{2}{14}z^{2})+(\frac{1}{14}z^{2}-1\frac{4}{5}z)= 22\frac{4}{5}z-\frac{2}{14}z^{2}+\frac{1}{14}z^{2}-1\frac{4}{5}z=\\\\=(22\frac{4}{5}z-1\frac{4}{5}z)+(\frac{1}{14}z^{2}-\frac{2}{14}z^{2})=21z-\frac{1}{14}z^{2}\\\\Otvet:\boxed{21z-\frac{1}{14}z^{2}}$