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Add.
The numerator should be expanded and simplified. The denominator should be either expanded or factored.

(9)/(x^(2)-12 x+36)+(x)/(x^(2)-36)=

Add.\newlineThe numerator should be expanded and simplified. The denominator should be either expanded or factored.\newline9x212x+36+xx236= \frac{9}{x^{2}-12 x+36}+\frac{x}{x^{2}-36}=

Full solution

Q. Add.\newlineThe numerator should be expanded and simplified. The denominator should be either expanded or factored.\newline9x212x+36+xx236= \frac{9}{x^{2}-12 x+36}+\frac{x}{x^{2}-36}=
  1. Factor denominators: First, we need to factor the denominators of both fractions to see if they can be simplified or if there is a common denominator.\newlineThe first denominator is x212x+36x^2 - 12x + 36. This is a perfect square trinomial and can be factored as (x6)2(x - 6)^2.\newlineThe second denominator is x236x^2 - 36. This is a difference of squares and can be factored as (x+6)(x6)(x + 6)(x - 6).
  2. Write fractions with factored denominators: Now that we have factored both denominators, we can write the fractions with their factored denominators:\newline(9)/(x212x+36)(9)/(x^2 - 12x + 36) becomes (9)/((x6)2)(9)/((x - 6)^2)\newline(x)/(x236)(x)/(x^2 - 36) becomes (x)/((x+6)(x6))(x)/((x + 6)(x - 6))
  3. Find common denominator: To add these fractions, we need a common denominator. The least common denominator (LCD) is (x6)2×(x+6)(x - 6)^2 \times (x + 6).\newlineWe will rewrite each fraction with the LCD as the denominator.
  4. Rewrite fractions with common denominator: The first fraction already has (x6)2(x - 6)^2 in the denominator, so it does not change:\newline9(x6)2\frac{9}{(x - 6)^2}\newlineThe second fraction needs to be multiplied by x6x6\frac{x - 6}{x - 6} to have the LCD as the denominator:\newlinex(x+6)(x6)×x6x6=x(x6)(x6)2×(x+6)\frac{x}{(x + 6)(x - 6)} \times \frac{x - 6}{x - 6} = \frac{x(x - 6)}{(x - 6)^2 \times (x + 6)}
  5. Add fractions: Now we can add the two fractions with the common denominator: 9(x6)2\frac{9}{(x - 6)^2} + x(x6)(x6)2(x+6)\frac{x(x - 6)}{(x - 6)^2 * (x + 6)}
  6. Combine numerators: Combine the numerators over the common denominator: 9+x(x6)(x6)2(x+6)\frac{9 + x(x - 6)}{(x - 6)^2 * (x + 6)}
  7. Expand and simplify numerator: Expand and simplify the numerator: 9+x26x=x26x+99 + x^2 - 6x = x^2 - 6x + 9
  8. Final simplified form: Now we have the simplified numerator over the common denominator: x26x+9(x6)2(x+6)\frac{x^2 - 6x + 9}{(x - 6)^2 * (x + 6)}
  9. Final simplified form: Now we have the simplified numerator over the common denominator: \newline(x26x+9)/((x6)2(x+6))(x^2 - 6x + 9)/((x - 6)^2 \cdot (x + 6))We can check if the numerator can be factored further, but it is already a perfect square trinomial, so it cannot be factored further. The final simplified form of the sum is: \newline(x26x+9)/((x6)2(x+6))(x^2 - 6x + 9)/((x - 6)^2 \cdot (x + 6))