To write the given multiplication [tex]\( 6 \times 6 \times 6 = 6 \)[/tex] as an exponential expression, we need to convert the repeated multiplication into a form where a base number is raised to a power.
Notice that the multiplication involves the number 6 being multiplied by itself three times:
[tex]\[ 6 \times 6 \times 6 \][/tex]
This can be expressed in exponential form as:
[tex]\[ 6^3 \][/tex]
So the correct representation of [tex]\( 6 \times 6 \times 6 \)[/tex] as an exponential expression is [tex]\( 6^3 \)[/tex].
However, interpreting the list of options provided, we need to find the option that correctly resembles the expression written [tex]\(\boldsymbol {6^3}\)[/tex]:
D. [tex]\( 6^3 \)[/tex]
Therefore, the answer is:
C. [tex]\(6^3 \)[/tex].