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Perform the following operation and express in simplest form.

(x+5)/(x^(2)+4x-5)÷(9x+9)/(x^(2)-1)
Answer:

Perform the following operation and express in simplest form.\newlinex+5x2+4x5÷9x+9x21 \frac{x+5}{x^{2}+4 x-5} \div \frac{9 x+9}{x^{2}-1} \newlineAnswer:

Full solution

Q. Perform the following operation and express in simplest form.\newlinex+5x2+4x5÷9x+9x21 \frac{x+5}{x^{2}+4 x-5} \div \frac{9 x+9}{x^{2}-1} \newlineAnswer:
  1. Factor Denominators: First, we need to factor the denominators of both fractions to simplify the expression.\newlineThe denominator of the first fraction is x2+4x5x^2 + 4x - 5, which factors into (x+5)(x1)(x + 5)(x - 1).\newlineThe denominator of the second fraction is x21x^2 - 1, which is a difference of squares and factors into (x+1)(x1)(x + 1)(x - 1).
  2. Rewrite as Multiplication: Next, we will rewrite the division of the two fractions as a multiplication by the reciprocal of the second fraction. (x+5)/(x2+4x5)÷(9x+9)/(x21)(x+5)/(x^2+4x-5) \div (9x+9)/(x^2-1) becomes (x+5)/((x+5)(x1))×(x21)/(9x+9)(x+5)/((x+5)(x-1)) \times (x^2-1)/(9x+9).
  3. Simplify by Canceling: Now, we can simplify the expression by canceling out common factors.\newlineThe (x+5)(x+5) in the numerator of the first fraction cancels with the (x+5)(x+5) in its denominator.\newlineThe (x21)(x^2-1) in the numerator of the second fraction is (x+1)(x1)(x+1)(x-1), and the (9x+9)(9x+9) in its denominator can be factored as 9(x+1)9(x+1).
  4. Final Simplified Expression: After canceling the common factors, we are left with:\newline1x1x19(x+1)\frac{1}{x-1} \cdot \frac{x-1}{9(x+1)}.\newlineThe (x1)(x-1) in the numerator and denominator cancel each other out.
  5. Final Simplified Expression: After canceling the common factors, we are left with: \newline1(x1)(x1)9(x+1)\frac{1}{(x-1)} \cdot \frac{(x-1)}{9(x+1)}.\newlineThe (x1)(x-1) in the numerator and denominator cancel each other out.The final simplified expression is:\newline19(x+1)\frac{1}{9(x+1)}.

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