Question

Plz answer this question..plzz​

Answer 1

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

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`