Math Problem Statement

Simplify (3a^2 b c^{-3} / ab^{-2} c^2)^2 as much as possible.

Solution

Let's solve the given expression from the image:

(3a2bc3ab2c2)2\left( \frac{3a^2 b c^{-3}}{a b^{-2} c^2} \right)^2

Step 1: Simplify the inner expression

We can simplify the terms inside the parentheses first.

3a2bc3ab2c2\frac{3a^2 b c^{-3}}{a b^{-2} c^2}

  1. Simplify the constants:

    • The constant is 33, so no simplification is needed here.
  2. Simplify the powers of aa:

    • In the numerator, the power of aa is 22.
    • In the denominator, the power of aa is 11.
    • Subtract the exponents: a21=a1a^{2-1} = a^1.
  3. Simplify the powers of bb:

    • In the numerator, the power of bb is 11.
    • In the denominator, the power of bb is 2-2.
    • Subtract the exponents: b1(2)=b1+2=b3b^{1 - (-2)} = b^{1 + 2} = b^3.
  4. Simplify the powers of cc:

    • In the numerator, the power of cc is 3-3.
    • In the denominator, the power of cc is 22.
    • Subtract the exponents: c32=c5c^{-3 - 2} = c^{-5}.

Thus, the simplified expression inside the parentheses is:

3ab3c53a b^3 c^{-5}

Step 2: Square the entire expression

Now we square the simplified expression:

(3ab3c5)2\left( 3a b^3 c^{-5} \right)^2

  1. Square the constant: 32=93^2 = 9.

  2. Square the powers of aa: a1(a1)2=a2a^1 \rightarrow (a^1)^2 = a^2.

  3. Square the powers of bb: b3(b3)2=b6b^3 \rightarrow (b^3)^2 = b^6.

  4. Square the powers of cc: c5(c5)2=c10c^{-5} \rightarrow (c^{-5})^2 = c^{-10}.

Thus, the final expression is:

9a2b6c109a^2 b^6 c^{-10}

Final Answers:

  • Power of aa: 22
  • Power of bb: 66
  • Power of cc: 10-10, but since the answer requires positive powers, we rewrite this as 1c10\frac{1}{c^{10}}.
  • Constant value: 99
  • Positions:
    • aa is in the numerator.
    • bb is in the numerator.
    • cc is in the denominator (because of the negative power).
    • Constant value is in the numerator.

Let me know if you want further clarifications or details. Here are five related questions to consider:

  1. How do you apply the power rule for exponents when simplifying fractions?
  2. What happens when you raise a fraction to a power?
  3. How do you convert negative exponents into fractions?
  4. Can you simplify a similar expression where variables are raised to fractional powers?
  5. How would the solution change if the original expression involved cube roots?

Tip:

When working with negative exponents, remember that they indicate reciprocals (e.g., xn=1xnx^{-n} = \frac{1}{x^n}).

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Math Problem Analysis

Mathematical Concepts

Algebra
Exponent Rules
Fraction Simplification

Formulas

Power of a quotient rule: (a/b)^n = a^n / b^n
Negative exponent rule: a^{-n} = 1/a^n
Multiplication of exponents: a^m * a^n = a^(m+n)

Theorems

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Suitable Grade Level

Grades 8-10