Simplify (4×3)⁶/(3×4)⁹: Complex Exponential Expression

Quotient Law with Negative Exponents

Insert the corresponding expression:

(4×3)6(3×4)9= \frac{\left(4\times3\right)^6}{\left(3\times4\right)^9}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simply
00:02 We will use the formula for dividing exponents
00:04 Any number (A) to the power of (N) divided by the same base (A) to the power of (M)
00:07 equals number (A) to the power of the difference of exponents (M-N)
00:14 In multiplication, the order of factors doesn't matter
00:17 We will use this formula in our exercise, and reverse the order of factors
00:23 We will use the formula for dividing exponents in our exercise
00:33 Let's calculate the exponent
00:36 We will use the formula for negative exponents
00:37 Any number (A) to the power of (-N)
00:40 equals the reciprocal number (1/A) to the opposite power (-N)
00:43 We will use this formula in our exercise
00:46 Let's substitute the reciprocal number and the opposite power
00:49 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Insert the corresponding expression:

(4×3)6(3×4)9= \frac{\left(4\times3\right)^6}{\left(3\times4\right)^9}=

2

Step-by-step solution

The given expression is: (4×3)6(3×4)9 \frac{\left(4\times3\right)^6}{\left(3\times4\right)^9} .

We want to simplify this expression using the laws of exponents.

First, notice that the base is the same in both the numerator and the denominator: 4×34 \times 3. We can apply the property of exponents that involves a quotient:

aman=amn \frac{a^m}{a^n} = a^{m-n}

Thus, we can rewrite the expression as:

(4×3)69 \left(4 \times 3\right)^{6-9}

Subtract the exponents: 69=36 - 9 = -3.

The expression now becomes:

(4×3)3 \left(4 \times 3\right)^{-3}

To express this with a positive exponent, recall the rule:

an=1an a^{-n} = \frac{1}{a^n}

Therefore, (4×3)3 \left(4 \times 3\right)^{-3} can be written as:

1(4×3)3 \frac{1}{\left(4 \times 3\right)^3}

The solution to the question is: 1(4×3)3 \frac{1}{\left(4\times3\right)^3}

3

Final Answer

1(4×3)3 \frac{1}{\left(4\times3\right)^3}

Key Points to Remember

Essential concepts to master this topic
  • Quotient Law: When dividing powers with same base, subtract exponents
  • Technique: Apply aman=amn \frac{a^m}{a^n} = a^{m-n} gives (4×3)69=(4×3)3 (4×3)^{6-9} = (4×3)^{-3}
  • Check: Negative exponent an=1an a^{-n} = \frac{1}{a^n} gives 1(4×3)3 \frac{1}{(4×3)^3}

Common Mistakes

Avoid these frequent errors
  • Treating different-looking bases as different
    Don't think (4×3)⁶ and (3×4)⁹ have different bases = missing the quotient law entirely! Multiplication is commutative, so 4×3 equals 3×4. Always recognize that (4×3) and (3×4) are the same base.

Practice Quiz

Test your knowledge with interactive questions

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

FAQ

Everything you need to know about this question

Why are (4×3) and (3×4) considered the same base?

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Because multiplication is commutative! This means 4×3 = 3×4 = 12. The order doesn't matter, so they're the exact same base for applying exponent rules.

What does it mean when I get a negative exponent?

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A negative exponent means "flip and make positive"! So an=1an a^{-n} = \frac{1}{a^n} . Think of it as moving the base from numerator to denominator.

How do I subtract exponents when the result is negative?

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Just subtract normally: 6 - 9 = -3. Don't worry about the negative result - that's completely normal! Then apply the negative exponent rule to get your final answer.

Can I simplify (4×3) to 12 in my final answer?

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You could, but it's often better to leave it as 1(4×3)3 \frac{1}{(4×3)^3} to match the answer choices. Both 1(4×3)3 \frac{1}{(4×3)^3} and 1123 \frac{1}{12^3} are correct!

What if I accidentally add the exponents instead of subtracting?

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Remember: multiply = add exponents, divide = subtract exponents. Since we have division (fraction), we subtract: 6 - 9 = -3. Adding would give 6 + 9 = 15, which is wrong!

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