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Simplify the following expressions using exponent rules: (x4)5, (3x2)3, and (y11y7)2.

Mathematics

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Step-by-step solution

10 steps

Simplify. (Continuing from previous response)

  • ex) (x4)5(x^4)^5
  1. Apply the power of a power rule, (am)n=am×n(a^m)^n = a^{m \times n}.

    $$
    x^{4 \times 5}
    $$
    
  2. Simplify the exponent.

    $$
    x^{20}
    $$
    The simplified form is $\boxed{x^{20}}$.
    
    • B) (3x2)3(3x^2)^3
  3. Apply the power to each factor inside the parenthesis, (ab)n=anbn(ab)^n = a^n b^n.

    $$
    3^3 \times (x^2)^3
    $$
    
  4. Calculate 333^3.

    $$
    27 \times (x^2)^3
    $$
    
  5. Apply the power of a power rule, (am)n=am×n(a^m)^n = a^{m \times n}.

    $$
    27x^{2 \times 3}
    $$
    
  6. Simplify the exponent.

    $$
    27x^6
    $$
    The simplified form is $\boxed{27x^6}$.
    
    • d) (y11y7)2\left(\frac{y^{11}}{y^7}\right)^2
  7. Simplify the expression inside the parenthesis using the division rule for exponents, aman=am−n\frac{a^m}{a^n} = a^{m-n}.

    $$
    \left(y^{11-7}\right)^2
    $$
    
  8. Simplify the exponent inside the parenthesis.

    $$
    (y^4)^2
    $$
    
  9. Apply the power of a power rule, (am)n=am×n(a^m)^n = a^{m \times n}.

    $$
    y^{4 \times 2}
    $$
    
  10. Simplify the exponent.

    $$
    y^8
    $$
    The simplified form is $\boxed{y^8}$.
    
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