Simplifying Factorials: Proving (n+1)(n+1)!+(n+1)! =(n+2)!

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SUMMARY

The discussion centers on simplifying the expression (n+1)(n+1)! + (n+1)! to demonstrate its equivalence to (n+2)!. The key solution involves factorizing the left-hand side to obtain [(n+1)!][(n+1)+1]. This confirms the identity by showing that the left-hand side simplifies directly to (n+2)!. Participants express a need for clarity in the simplification process, indicating a common challenge in discrete mathematics.

PREREQUISITES
  • Understanding of factorial notation and properties
  • Basic algebraic manipulation skills
  • Familiarity with discrete mathematics concepts
  • Experience with mathematical proofs and identities
NEXT STEPS
  • Study the properties of factorials and their applications in combinatorics
  • Learn about algebraic factorization techniques
  • Explore mathematical induction as a proof technique in discrete mathematics
  • Review examples of simplifying expressions involving factorials
USEFUL FOR

Students in discrete mathematics, educators teaching factorial concepts, and anyone seeking to improve their algebraic simplification skills.

hammonjj
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Homework Statement


(n+1)(n+1)!+(n+1)! =(n+2)! simplify

The Attempt at a Solution


I need to know how to simplify this to show it is true. I know that the above statement is true, but I do not understand how to simplify the left hand side to show it.

Thanks, I really have no idea where to begin and, frankly, it's kind of embarrassing as this is for a discrete math class :(

Thanks!
 
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Factorize LHS then you will get [(n+1)!][(n+1)+1] :smile:
 
hammonjj said:

Homework Statement


(n+1)(n+1)!+(n+1)! =(n+2)! simplify

The Attempt at a Solution


I need to know how to simplify this to show it is true. I know that the above statement is true, but I do not understand how to simplify the left hand side to show it.

Thanks, I really have no idea where to begin and, frankly, it's kind of embarrassing as this is for a discrete math class :(

Thanks!
What is (n+1)x + x ?
 

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