2. \((d^2)^4\cdot(d^2)^3\)

\((d^2)^4=d^8\), \((d^2)^3=d^6\).

\((d^2)^4\cdot(d^2)^3=d^8\cdot d^6=d^{8+6}=d^{14}\).

Ответ: \(d^{14}\)