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Simplify the following expression completely.

(x^(2)-8x+15)/(x^(2)+3x-40)
Answer:

Simplify the following expression completely.\newlinex28x+15x2+3x40 \frac{x^{2}-8 x+15}{x^{2}+3 x-40} \newlineAnswer:

Full solution

Q. Simplify the following expression completely.\newlinex28x+15x2+3x40 \frac{x^{2}-8 x+15}{x^{2}+3 x-40} \newlineAnswer:
  1. Factor Numerator and Denominator: Factor the numerator and the denominator.\newlineThe numerator x28x+15x^2 - 8x + 15 can be factored into (x3)(x5)(x - 3)(x - 5) because (x3)(x5)=x25x3x+15=x28x+15(x - 3)(x - 5) = x^2 - 5x - 3x + 15 = x^2 - 8x + 15.\newlineThe denominator x2+3x40x^2 + 3x - 40 can be factored into (x+8)(x5)(x + 8)(x - 5) because (x+8)(x5)=x25x+8x40=x2+3x40(x + 8)(x - 5) = x^2 - 5x + 8x - 40 = x^2 + 3x - 40.
  2. Rewrite with Factored Forms: Rewrite the expression with the factored forms.\newlineThe expression becomes:\newline(x3)(x5)(x+8)(x5)\frac{(x - 3)(x - 5)}{(x + 8)(x - 5)}
  3. Cancel Common Factors: Cancel out the common factors.\newlineThe (x5)(x - 5) term is present in both the numerator and the denominator, so they cancel each other out.\newlineThe expression simplifies to:\newline(x3)/(x+8)(x - 3)/(x + 8)
  4. Check for Further Simplification: Check for any further simplification. There are no common factors left, and neither the numerator nor the denominator can be factored further. Therefore, the expression is fully simplified.

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