Evaluate (3×5×7)/(4×8×10) Raised to the Fifth Power

Exponent Rules with Fraction Products

Insert the corresponding expression:

(3×5×74×8×10)5= \left(\frac{3\times5\times7}{4\times8\times10}\right)^5=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simplify the following problem
00:04 According to the laws of exponents, a fraction raised to the power (N)
00:09 equals the numerator and denominator raised to the same power (N)
00:16 Note that both numerator and denominator are products
00:22 We will apply this formula to our exercise
00:36 According to the laws of exponents when a product is raised to the power (N)
00:42 it is equal to each factor in the product separately raised to the same power (N)
00:47 We will apply this formula to our exercise
01:11 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Insert the corresponding expression:

(3×5×74×8×10)5= \left(\frac{3\times5\times7}{4\times8\times10}\right)^5=

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the expression (3×5×74×8×10)5\left(\frac{3 \times 5 \times 7}{4 \times 8 \times 10}\right)^5.

  • Step 2: Apply the rule for powers of fractions to simplify the expression.

  • Step 3: Simplify the products and raise each factor to the power of 5.

Now, let's work through each step:
Step 1: The expression given is (3×5×74×8×10)5\left(\frac{3 \times 5 \times 7}{4 \times 8 \times 10}\right)^5.
Step 2: According to the power of a fraction rule, (ab)n=anbn\left(\frac{a}{b}\right)^n = \frac{a^n}{b^n}, we can distribute the power of 5 to both the numerator and denominator:

(3×5×74×8×10)5=(3×5×7)5(4×8×10)5 \left(\frac{3 \times 5 \times 7}{4 \times 8 \times 10}\right)^5 = \frac{(3 \times 5 \times 7)^5}{(4 \times 8 \times 10)^5}

Step 3: Now apply the power to each factor:

=35×55×7545×85×105 = \frac{3^5 \times 5^5 \times 7^5}{4^5 \times 8^5 \times 10^5}

This matches the expression in choice 2. Therefore, the correct corresponding expression is 35×55×7545×85×105\frac{3^5 \times 5^5 \times 7^5}{4^5 \times 8^5 \times 10^5} and also (3×5×7)5(4×8×10)5 \frac{(3 \times 5 \times 7)^5}{(4 \times 8 \times 10)^5} .

Therefore, the solution to the problem is A+B.

3

Final Answer

a'+b' are correct

Key Points to Remember

Essential concepts to master this topic
  • Power Rule: (ab)n=anbn \left(\frac{a}{b}\right)^n = \frac{a^n}{b^n} distributes exponent to both parts
  • Technique: (3×5×7)5=35×55×75 (3 \times 5 \times 7)^5 = 3^5 \times 5^5 \times 7^5 applies to each factor
  • Check: Both forms (3×5×7)5(4×8×10)5 \frac{(3\times5\times7)^5}{(4\times8\times10)^5} and 35×55×7545×85×105 \frac{3^5\times5^5\times7^5}{4^5\times8^5\times10^5} are equivalent ✓

Common Mistakes

Avoid these frequent errors
  • Applying exponent to only part of the expression
    Don't raise just one factor like 35×5×74×8×10 \frac{3^5 \times 5 \times 7}{4 \times 8 \times 10} = wrong result! The exponent 5 applies to the entire fraction, not individual pieces. Always distribute the exponent to both numerator and denominator completely: (3×5×74×8×10)5=(3×5×7)5(4×8×10)5 \left(\frac{3\times5\times7}{4\times8\times10}\right)^5 = \frac{(3\times5\times7)^5}{(4\times8\times10)^5} .

Practice Quiz

Test your knowledge with interactive questions

\( 112^0=\text{?} \)

FAQ

Everything you need to know about this question

Why can I write the answer in two different ways?

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Both forms are mathematically equivalent! (3×5×7)5(4×8×10)5 \frac{(3\times5\times7)^5}{(4\times8\times10)^5} shows the grouped form, while 35×55×7545×85×105 \frac{3^5\times5^5\times7^5}{4^5\times8^5\times10^5} shows the distributed form. They represent the same value.

Do I need to calculate the actual numerical answer?

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Not necessarily! The question asks for the corresponding expression, not the final number. Showing the correct algebraic form demonstrates your understanding of exponent rules.

What's the difference between (abc)⁵ and a⁵b⁵c⁵?

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There's no difference! When you raise a product to a power: (abc)n=an×bn×cn (abc)^n = a^n \times b^n \times c^n . This is the power of a product rule in action.

Why does the exponent apply to both numerator and denominator?

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Because of the power of a quotient rule: (ab)n=anbn \left(\frac{a}{b}\right)^n = \frac{a^n}{b^n} . When you raise a fraction to a power, the exponent distributes to both the top and bottom parts.

Can I simplify this expression further?

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You could calculate the numerical values, but the expressions shown are already in their simplified algebraic form. Both answer choices A and B correctly represent the mathematical relationship.

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