Identify common denominator: Identify the common denominator for the two fractions.The common denominator for the fractions (x)/(x+5) and (x+5)/(x−5) is the product of the two denominators, which is (x+5)(x−5).
Express with common denominator: Express the given fractions with the common denominator.To add the fractions, we need to express both fractions with the common denominator (x+5)(x−5), which is also equal to x2−25.x+5x becomes x2−25x(x−5) and x−5x+5 becomes x2−25(x+5)(x+5).
Rewrite with common denominator: Rewrite the equation with the common denominator.The equation now becomes:(x)(x−5)/(x2−25)+(x+5)(x+5)/(x2−25)=(50)/(x2−25).
Combine numerators: Combine the numerators over the common denominator.Now we combine the numerators while keeping the common denominator:[(x)(x−5)+(x+5)(x+5)]/(x2−25)=(50)/(x2−25).
Expand numerators: Expand the numerators.Expand (x)(x−5) to get x2−5x and expand (x+5)(x+5) to get x2+10x+25.The equation now becomes:x2−25x2−5x+x2+10x+25=x2−2550.
Combine like terms: Combine like terms in the numerator.Combine x2−5x+x2+10x+25 to get 2x2+5x+25.The equation now becomes:x2−252x2+5x+25 = x2−2550.
Set numerators equal: Since the denominators are the same, set the numerators equal to each other. 2x2+5x+25=50.
Subtract to zero: Subtract 50 from both sides to set the equation to zero.2x2+5x+25−50=0.This simplifies to:2x2+5x−25=0.
Factor quadratic: Factor the quadratic equation.We need to factor 2x2+5x−25. However, this quadratic does not factor nicely, and we would typically use the quadratic formula to find the roots. But since the original question was to simplify the expression, we have already done that in Step 6, and this step is not necessary for simplification.
More problems from Add, subtract, multiply, and divide polynomials