Sangeetha Pulapaka
0

STEP 1: Recall what are polynomials

https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring/x2f8bb11595b61c86:multiply-monomial-polynomial/v/polynomials-intro

STEP 2: Recall what are fractions

https://www.ducksters.com/kidsmath/fractions_introduction.php

STEP 3: Recall what is an expression

http://home.avvanta.com/~math/def2.cgi?t=expression

STEP 4: Recall what is an rational expression

http://home.avvanta.com/~math/def2.cgi?t=expression

STEP 5: Recall  subtracting rational expressions with unlike denominators

https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:rational/x2ec2f6f830c9fb89:rational-add-sub-intro/v/subtracting-rational-expressions-w-unlike-denominators

STEP 6: Simplify

\frac{3}{(x+2)} - \frac{2}{(x-1)}

\frac{3(x-1)-2(x+2)}{(x+2)(x-1)}

\frac{ 3x -3 -2x -4}{(x+2)(x+1)}

\frac{x-7}{(x+2)(x+1)}