Adding and Subtracting Rational Expressions with Like Denominators
To add (or subtract) two or more rational expressions with the same denominators, add (or subtract) the numerators and place the result over the denominator.
If a , b , and c represent polynomials (with c≠0 ), then
ac+bc=a+bc
and
ac−bc=a−bc .
Example 1:
Add nn+3+2n+3 .
Since the denominators are the same, just add the numerators.
Answers & Comments
Answer:
Adding and Subtracting Rational Expressions with Like Denominators
To add (or subtract) two or more rational expressions with the same denominators, add (or subtract) the numerators and place the result over the denominator.
If a , b , and c represent polynomials (with c≠0 ), then
ac+bc=a+bc
and
ac−bc=a−bc .
Example 1:
Add nn+3+2n+3 .
Since the denominators are the same, just add the numerators.
nn+3+2n+3=n+2n+3