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Perform the following operation and express in simplest form.

(x^(3))/(x^(2)-4x-32)*(x^(2)-16)/(6x^(2))
Answer:

Perform the following operation and express in simplest form.\newlinex3x24x32x2166x2 \frac{x^{3}}{x^{2}-4 x-32} \cdot \frac{x^{2}-16}{6 x^{2}} \newlineAnswer:

Full solution

Q. Perform the following operation and express in simplest form.\newlinex3x24x32x2166x2 \frac{x^{3}}{x^{2}-4 x-32} \cdot \frac{x^{2}-16}{6 x^{2}} \newlineAnswer:
  1. Factor Quadratic Expressions: We need to simplify the expression by factoring and reducing common terms where possible.\newlineFirst, let's factor the quadratic expressions in the denominators and the numerator where possible.
  2. Factor x24x32x^2 - 4x - 32: Factor the quadratic x24x32x^2 - 4x - 32. This can be factored into (x8)(x+4)(x - 8)(x + 4) because (x8)(x+4)=x28x+4x32=x24x32(x - 8)(x + 4) = x^2 - 8x + 4x - 32 = x^2 - 4x - 32.
  3. Factor x216x^2 - 16: Factor the quadratic x216x^2 - 16. This is a difference of squares and can be factored into (x4)(x+4)(x - 4)(x + 4) because (x4)(x+4)=x24x+4x16=x216(x - 4)(x + 4) = x^2 - 4x + 4x - 16 = x^2 - 16.
  4. Rewrite with Factored Forms: Now, rewrite the original expression with the factored forms: x3(x8)(x+4)(x4)(x+4)6x2\frac{x^3}{(x - 8)(x + 4)} \cdot \frac{(x - 4)(x + 4)}{6x^2}.
  5. Cancel Common Factors: Next, we can cancel out the common factors in the numerator and the denominator. The (x+4)(x + 4) terms cancel each other out.
  6. Cancel x2x^2 Terms: After canceling, the expression becomes: x3x8x46x2\frac{x^3}{x - 8} \cdot \frac{x - 4}{6x^2}.
  7. Multiply Remaining Terms: Now, we can cancel x2x^2 from the numerator of the first fraction and the denominator of the second fraction, leaving us with: xx8×x46\frac{x}{x - 8} \times \frac{x - 4}{6}.
  8. Final Simplification: Finally, we multiply the remaining terms. Since there are no common factors left, we simply multiply the numerators and the denominators: (x×(x4))/((x8)×6)(x \times (x - 4)) / ((x - 8) \times 6).
  9. Check for Common Factors: The expression simplifies to: \newlineegin{equation}\newline\frac{x^22 - 44x}{66x - 4848}.\newline\end{equation}
  10. Check for Common Factors: The expression simplifies to: \newline(x24x)/(6x48)(x^2 - 4x) / (6x - 48).We can check if there's a common factor that can be factored out from the numerator and the denominator. However, there are no common factors, so the expression is already in its simplest form.

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