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Find the difference.

(x^(2)-5)/(x^(2)+5x-14)-(x+3)/(x+7)=

Find the difference.\newlinex25x2+5x14x+3x+7= \frac{x^{2}-5}{x^{2}+5 x-14}-\frac{x+3}{x+7}=

Full solution

Q. Find the difference.\newlinex25x2+5x14x+3x+7= \frac{x^{2}-5}{x^{2}+5 x-14}-\frac{x+3}{x+7}=
  1. Factor Denominator: First, factor the denominator of the first fraction.\newlineThe quadratic x2+5x14x^2 + 5x - 14 can be factored into (x+7)(x2)(x + 7)(x - 2).\newlineSo, (x25)/(x2+5x14)(x^2 - 5) / (x^2 + 5x - 14) becomes (x25)/((x+7)(x2))(x^2 - 5) / ((x + 7)(x - 2)).
  2. Combine Fractions: Notice that the denominator of the second fraction is (x+7)(x + 7), which is a factor of the denominator of the first fraction.\newlineThis means we can combine the two fractions over a common denominator, which is (x+7)(x2)(x + 7)(x - 2).
  3. Adjust Second Fraction: Rewrite both fractions with the common denominator.\newlineThe first fraction is already in the correct form, but the second fraction needs to be adjusted.\newlineWe multiply the numerator and the denominator of the second fraction by (x2)(x - 2) to get the common denominator.\newlineSo, (x+3)/(x+7)(x + 3) / (x + 7) becomes ((x+3)(x2))/((x+7)(x2))((x + 3)(x - 2)) / ((x + 7)(x - 2)).
  4. Subtract Fractions: Now, subtract the second fraction from the first fraction. (x25)((x+3)(x2))(x+7)(x2)\frac{(x^2 - 5) - ((x + 3)(x - 2))}{(x + 7)(x - 2)}
  5. Expand Second Fraction: Expand the numerator of the second fraction. \newline(x+3)(x2)=x22x+3x6=x2+x6(x + 3)(x - 2) = x^2 - 2x + 3x - 6 = x^2 + x - 6
  6. Substitute Expanded Form: Substitute the expanded form back into the numerator of the combined fraction. \newline(x25)(x2+x6)(x+7)(x2)\frac{(x^2 - 5) - (x^2 + x - 6)}{(x + 7)(x - 2)}
  7. Simplify Numerator: Simplify the numerator by combining like terms. x2x25x+6=x+1x^2 - x^2 - 5 - x + 6 = -x + 1
  8. Write Simplified Form: Write the simplified form of the expression. (x+1)/((x+7)(x2))(-x + 1) / ((x + 7)(x - 2))
  9. Check for Simplification: Check for any possible simplification or cancellation. There are no common factors between the numerator and the denominator, so this is the final simplified form.