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Simplify the following expression completely.

(x^(2)-x-30)/(x^(2)-7x+6)
Answer:

Simplify the following expression completely.\newlinex2x30x27x+6 \frac{x^{2}-x-30}{x^{2}-7 x+6} \newlineAnswer:

Full solution

Q. Simplify the following expression completely.\newlinex2x30x27x+6 \frac{x^{2}-x-30}{x^{2}-7 x+6} \newlineAnswer:
  1. Factor Numerator: First, we need to factor both the numerator and the denominator of the expression.\newlineLet's start with the numerator: x2x30x^2 - x - 30.\newlineWe are looking for two numbers that multiply to 30-30 and add up to 1-1 (the coefficient of xx).\newlineThe numbers 6-6 and 55 satisfy these conditions because 6×5=30-6 \times 5 = -30 and 6+5=1-6 + 5 = -1.\newlineSo we can factor the numerator as (x6)(x+5)(x - 6)(x + 5).
  2. Factor Denominator: Now, let's factor the denominator: x27x+6x^2 - 7x + 6. We are looking for two numbers that multiply to 66 and add up to 7-7. The numbers 6-6 and 1-1 satisfy these conditions because 6×1=6-6 \times -1 = 6 and 61=7-6 - 1 = -7. So we can factor the denominator as (x6)(x1)(x - 6)(x - 1).
  3. Cancel Common Factor: With both the numerator and denominator factored, the expression is now: (x6)(x+5)(x6)(x1)\frac{(x - 6)(x + 5)}{(x - 6)(x - 1)}. We can see that (x6)(x - 6) is a common factor in both the numerator and the denominator.
  4. Simplify Expression: We can cancel out the common factor (x6)(x - 6) from both the numerator and the denominator.\newlineThis leaves us with (x+5)/(x1)(x + 5) / (x - 1).
  5. Final Simplified Form: The expression (x+5)/(x1)(x + 5) / (x - 1) is already in its simplest form.\newlineThere are no common factors left to cancel, and both the numerator and the denominator are in their simplest form.

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