Q. Perform the following operation and express in simplest form.x2−4x−32x3⋅6x2x2−16Answer:
Factor Quadratic Expressions: We need to simplify the expression by factoring and reducing common terms where possible.First, let's factor the quadratic expressions in the denominators and the numerator where possible.
Factor x2−4x−32: Factor the quadratic x2−4x−32. This can be factored into (x−8)(x+4) because (x−8)(x+4)=x2−8x+4x−32=x2−4x−32.
Factor x2−16: Factor the quadratic x2−16. This is a difference of squares and can be factored into (x−4)(x+4) because (x−4)(x+4)=x2−4x+4x−16=x2−16.
Rewrite with Factored Forms: Now, rewrite the original expression with the factored forms: (x−8)(x+4)x3⋅6x2(x−4)(x+4).
Cancel Common Factors: Next, we can cancel out the common factors in the numerator and the denominator. The (x+4) terms cancel each other out.
Cancel x2 Terms: After canceling, the expression becomes: x−8x3⋅6x2x−4.
Multiply Remaining Terms: Now, we can cancel x2 from the numerator of the first fraction and the denominator of the second fraction, leaving us with: x−8x×6x−4.
Final Simplification: Finally, we multiply the remaining terms. Since there are no common factors left, we simply multiply the numerators and the denominators: (x×(x−4))/((x−8)×6).
Check for Common Factors: The expression simplifies to: egin{equation}\frac{x^2 - 4x}{6x - 48}.\end{equation}
Check for Common Factors: The expression simplifies to: (x2−4x)/(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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