Question

the perimeter of a triangle is 5 square + 3 square minus 1 and 2 of its sides are to a minus 5 + 7 square and 3 a square + 4 - 8 find the third side of a triangle​

Answer 1

Perimeter = 5²+3²-1

First side = 2a-5+7²

Second side = 3a²+4-8

Third side =

Perimeter - (First side+Second side)

=5²+3²-1-2a+5-7²-3a²-4+8