Adding and subtracting Rational expressions. I am in grade 10 and I am a student here is an example of the questions:
1/(x+1) - 1/(x-1) = ?
thanks for you helpHi Donna,
Adding and subtracting rational exprressions is very similar to adding and subtracting fractions. Suppose you have
Likewise for denominators of x + 1 and x - 1 a common denominator is (x + 1) times (x - 1). Thus multiply the numerator and denominator of the first fraction by (x - 1) and multiply the numerator and denominator of the second fraction by (x + 1). You the get