Calculate (2×4)^10: Evaluating Powers with Parentheses

Power of Product with Exponent Rules

Choose the expression that corresponds to the following:

(2×4)10= \left(2\times4\right)^{10}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:08 Let's simplify this problem together.
00:11 To tackle a multiplication inside parentheses with an exponent outside,
00:16 Raise each factor inside to the power of the exponent.
00:24 Now, let's apply this rule to our exercise.
00:33 And there you have it! That's the solution.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Choose the expression that corresponds to the following:

(2×4)10= \left(2\times4\right)^{10}=

2

Step-by-step solution

To solve the question, we need to apply the power of a product exponent rule. The formula states that for any real numbers a a and b b , and any integern n :

  • (a×b)n=an×bn (a \times b)^n = a^n \times b^n

Looking at our expression, we can see that:

  • a=2 a = 2

  • b=4 b = 4

  • n=10 n = 10

Now, if we apply the formula:

  • (2×4)10=210×410 (2 \times 4)^{10} = 2^{10} \times 4^{10}

Therefore, the expression (2×4)10 (2 \times 4)^{10} is equivalent to 210×410 2^{10} \times 4^{10} .

3

Final Answer

210×410 2^{10}\times4^{10}

Key Points to Remember

Essential concepts to master this topic
  • Rule: Power of a product applies exponent to each factor
  • Technique: (a×b)n=an×bn (a \times b)^n = a^n \times b^n distributes the exponent
  • Check: Both factors must have same exponent: 210×410 2^{10} \times 4^{10}

Common Mistakes

Avoid these frequent errors
  • Adding exponents instead of applying to both factors
    Don't write (2×4)10 (2 \times 4)^{10} as 25×42 2^5 \times 4^2 or split the exponent = wrong answer! This confuses addition with distribution. Always apply the full exponent to each factor: 210×410 2^{10} \times 4^{10} .

Practice Quiz

Test your knowledge with interactive questions

Choose the expression that corresponds to the following:

\( \)\( \left(2\times11\right)^5= \)

FAQ

Everything you need to know about this question

Why does the exponent apply to both numbers inside the parentheses?

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The parentheses mean we're raising the entire product to the 10th power. Think of it as (2×4)×(2×4)×... (2 \times 4) \times (2 \times 4) \times ... ten times, which gives us 210×410 2^{10} \times 4^{10} .

Can I simplify (2×4)10 (2 \times 4)^{10} to 810 8^{10} first?

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Yes! You could calculate 2×4=8 2 \times 4 = 8 first to get 810 8^{10} . But the question asks for the equivalent expression, so 210×410 2^{10} \times 4^{10} is the correct form.

What's wrong with 210×4 2^{10} \times 4 as an answer?

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This only applies the exponent to the first number! The power of a product rule requires the exponent to apply to both factors: 210×410 2^{10} \times 4^{10} .

How do I remember this rule?

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Think: "Exponents distribute to everyone in parentheses!" Just like distributing candy to everyone at a party, the exponent goes to each factor inside the parentheses.

Does this work with more than two numbers?

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Absolutely! For example, (2×3×5)4=24×34×54 (2 \times 3 \times 5)^4 = 2^4 \times 3^4 \times 5^4 . The exponent applies to every factor inside the parentheses.

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