Question

Plz answer this question..plzz​

Answer 1

Answer:

$Side\ 3 = 5p^2q + 3r$

Step-by-step explanation:

Given

$Perimeter = 7p^2q + 13r$

$Side\ 1 = 14r$

$Side\ 2 = 2p^2q - 4r$

Required

Find the length of the third side

Perimeter is calculated as thus:

$Perimeter = Side\ 1 + Side\ 2 + Side\ 3$

This gives:

$7p^2q + 13r = 14r + 2p^2q - 4r + Side\ 3$

Collect like terms

$Side\ 3 = 7p^2q - 2p^2q + 13r - 14r + 4r$

$Side\ 3 = 5p^2q + 3r$