is 5 the thrid power times 5 to a negtive 5th power?

1 answer

To determine if \( 5 \) is equal to \( 5^3 \times 5^{-5} \), we can use the laws of exponents.

According to the laws of exponents, when multiplying numbers with the same base, we add the exponents:

\[ 5^3 \times 5^{-5} = 5^{3 + (-5)} = 5^{3 - 5} = 5^{-2} \]

Now we can simplify \( 5^{-2} \):

\[ 5^{-2} = \frac{1}{5^2} = \frac{1}{25} \]

So, we find that:

\[ 5^3 \times 5^{-5} = \frac{1}{25} \]

Thus, \( 5 \) is not equal to \( 5^3 \times 5^{-5} \); in fact, \( 5^3 \times 5^{-5} = \frac{1}{25} \).