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Simplify the expression [tex]5^3 \times 5^7[/tex].

A. [tex]\frac{1}{5^2}[/tex]
B. [tex]5^2[/tex]
C. [tex]\frac{1}{5}[/tex]
D. [tex]-5^2[/tex]


Sagot :

To simplify the expression [tex]\( 5^3 \times 5^7 \)[/tex], we use the laws of exponents.

1. Law of Exponents: When you multiply two expressions that have the same base, you add their exponents. Mathematically, this is written as:
[tex]\[ a^m \times a^n = a^{m+n} \][/tex]
where [tex]\( a \)[/tex] is the base and [tex]\( m \)[/tex] and [tex]\( n \)[/tex] are the exponents.

2. Identify the components of the problem:
- Base: [tex]\( 5 \)[/tex]
- Exponents: [tex]\( 3 \)[/tex] and [tex]\( 7 \)[/tex]

3. Apply the law of exponents:
[tex]\[ 5^3 \times 5^7 = 5^{3+7} \][/tex]

4. Add the exponents:
[tex]\[ 3 + 7 = 10 \][/tex]

5. The simplified expression is:
[tex]\[ 5^{10} \][/tex]

Next, we see if this matches any of the given multiple-choice options:

A. [tex]\(\frac{1}{5^2}\)[/tex] [tex]$\quad$[/tex] (incorrect, because it simplifies to [tex]\( 5^{-2} \)[/tex])

B. [tex]\(5^2\)[/tex] [tex]$\quad$[/tex] (incorrect, because [tex]\( 5^{10} \neq 5^2 \)[/tex])

C. [tex]\(\frac{1}{5}\)[/tex] [tex]$\quad$[/tex] (incorrect, because it simplifies to [tex]\( 5^{-1} \)[/tex])

D. [tex]\(-5^2\)[/tex] [tex]$\quad$[/tex] (incorrect, because [tex]\( 5^{10} \neq -5^2 \)[/tex])

The simplified expression [tex]\( 5^{10} \)[/tex] does not match any of the given multiple-choice options directly. But considering the phrasing of the question specifically aimed at simplification, we've confirmed our final result:

The simplified expression for [tex]\( 5^3 \times 5^7 \)[/tex] is [tex]\( 5^{10} \)[/tex].

Hence, the answer is not listed directly in the choices provided, but the simplification process is correct.