(b2)7

The expression \((b^2)^7\) can be simplified using the power of a power property, which states that \((a^m)^n = a^{m \cdot n}\).

Applying this property here:

\[ (b^2)^7 = b^{2 \cdot 7} = b^{14} \]

So, \((b^2)^7 = b^{14}\).