Solve (5×11)/(3×7) Raised to Power a: Complex Fraction Expression

Insert the corresponding expression:

(5×113×7)a= \left(\frac{5\times11}{3\times7}\right)^a=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simplify the following exercise
00:04 According to the laws of exponents, a fraction raised to the power (N)
00:08 equals the numerator and denominator raised to the same power (N)
00:12 We will apply this formula to our exercise
00:22 According to the laws of exponents when a product is raised to the power (N)
00:27 it is equal to each factor in the product separately raised to the same power (N)
00:31 We will apply this formula to our exercise
00:37 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:

(5×113×7)a= \left(\frac{5\times11}{3\times7}\right)^a=

2

Step-by-step solution

To solve this problem, follow these steps:

  • Identify the given expression: (5×113×7)a \left(\frac{5 \times 11}{3 \times 7}\right)^a .

  • Apply the exponent rule for powers of a fraction: (xy)a=xaya\left(\frac{x}{y}\right)^a = \frac{x^a}{y^a}.

  • Apply this rule separately to the numerator and the denominator:

The numerator is 5×115 \times 11 and the denominator is 3×73 \times 7. When the fraction is raised to a power aa, we apply the power to both the numerator and denominator:

(5×113×7)a=(5×11)a(3×7)a\left(\frac{5 \times 11}{3 \times 7}\right)^a = \frac{(5 \times 11)^a}{(3 \times 7)^a}

Which corresponds to option 1.

Each product is raised to the power aa. By exponent rules (xy)a=xa×ya(xy)^a = x^a \times y^a, this expression becomes:

5a×11a3a×7a\frac{5^a \times 11^a}{3^a \times 7^a}

Thus, the expression can be rewritten as: 5a×11a3a×7a\frac{5^a \times 11^a}{3^a \times 7^a}.

Referring to the provided choices, this matches choice 3.

Therefore, the correct choice is 4, A+C are correct.

3

Final Answer

A'+C' are correct

Practice Quiz

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

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