7. Jena has a triangular garden with a perimeter that can be represented by 25r ^ 2 - 9r + 14 . The sum of two sides of the garden is represented by 10r ^ 2 + 12r + 9 . Which expression represents the length of the third side ?

Step-by-step explanation:

Given: Perimeter of triangular garden =

The sum of two sides of the garden =

Perimeter is the sum of all sides of a triangle.

Third side = Perimeter of triangular garden - sum of two sides of the garden

The expression represent the third side = .

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step-by-step explanation:

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