Question

A triangle has side lengths of (5m - 2n) centimeters, (7m + 10p) centimeters,

and (8p9n) centimeters. Which expression represents the perimeter, in
centimeters, of the triangle?

Answer 1

Explanation:

Perimeter is addition of the three sides

P= (5m - 2n) + (7m +10p) + 8p9n

Collect like terms

P = 8p9n +10p +12m - 2n