socratic scanmath logo
  • calculator-type-img Algebra
  • calculator-type-img Calculus
  • calculator-type-img Trigonometry
  • calculator-type-img Matrix
( n + 2 ) ! n ! = ( n + 2 ) ( n + 1 )
Question

Uh oh!

Fail to solve, please make sure if it contains an error and try again.