What set of sides makes an triangle

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Which of the choices shown could be used to prove that aacp=abcp ?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.