To perform the subtraction \( 4.66 \times 10^{-5} - 7.34 \times 10^{-7} \), we need to express both terms with the same exponent.
The term \( 4.66 \times 10^{-5} \) can remain as is, while \( 7.34 \times 10^{-7} \) can be converted to an equivalent term with a power of \( 10^{-5} \):
\[ 7.34 \times 10^{-7} = 0.0734 \times 10^{-5} \]
Now, we can rewrite the subtraction:
\[ 4.66 \times 10^{-5} - 0.0734 \times 10^{-5} = (4.66 - 0.0734) \times 10^{-5} \]
Now perform the subtraction:
\[ 4.66 - 0.0734 = 4.5866 \]
Thus, we have:
\[ 4.5866 \times 10^{-5} \]
Since we are subtracting a smaller number from a larger number, the result will not be negative. Therefore, the correct answer is:
\[ 4.5866 \times 10^{-5} \]
The closest matching response from the options provided is:
4.5866×10^−5