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3-42.

Rewrite each expression in the form $A\left(b\right)^{x}$.

1.  $6 \cdot 2 ^ { ( 4 x + 3 ) }$

$(6)2^{4x}2^{3}$

$(6)2^{4x}(8)$

$\left(48\right)\left(2^{4}\right)^{x}$

$\left(48\right)\left(16\right)^{x}$

1.  $18 \cdot 3 ^ { ( 3 x - 4 ) }$

Use the same thinking process as shown in part (a).