\(4^6\cdot8^{10}\)
\(=\left(2^2\right)^6\cdot\left(2^3\right)^{10}\)
\(=2^{12}\cdot2^{30}\)
\(=2^{42}\)
\(9^3\cdot27^4\)
\(=\left(3^2\right)^3\cdot\left(3^3\right)^4\)
\(=3^6\cdot3^{12}\)
\(=3^{18}\)
\(16\cdot3^4\)
\(=2^4\cdot3^4\)
\(=6^4\)
a) 46.810=212.230=242
b)93.274=36.312=318
c)16.34=24.34=64