Question

The perimeter of a triangle is 7p2 - 8p + 9 and
two of its sides are 2p2 - p +1 and 11p2 – 3p
+ 5. Find the third side of the triangle​

Answer 1

Answer:third side is

(7p²-8p+9)-(2p2 - p +1 +11p2 – 3p)

Step-by-step explanation:

Perimeter of a triangle is the sum of its three sides.

When two sides and Perimeter is given , then third side =Perimeter-sum of two given side.

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Answer 2

Step-by-step explanation:

Let the first side be a and second side be b and the perimeter be c.

Third side = c - (a+b)