Izračunaj X: $$ {\left\lbrack \matrix{2 & 3 \cr 4 & 10 } \right\rbrack} * \left\lbrack \matrix{1 & 7 \cr 0 & 1} \right\rbrack = ? $$ $$\int_1^ 3 (x + 10 )^ 7 dx + 3 x = 0 $$