SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

Algebraic Techniques, SM-Bank 054

Write an expression for the perimeter of the triangle below. Give your answer in simplest form.  (2 marks)

Show Answers Only

\(5m+n\)

Show Worked Solution
\(\text{Perimeter}\)  \(=2m+(m+2n)+(2m-n)\)
  \(=2m+m+2m+2n-n\)
  \(=5m+n\)