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Mathematics, 28.01.2020 05:31 caydence24

The lengths of two sides of a triangle are shown below:

side 1: 3x2 − 2x − 1

side 2: 9x + 2x2 − 3

the perimeter of the triangle is 5x3 + 4x2 − x − 3.

part a: what is the total length of the two sides, 1 and 2, of the triangle? (5 points)

part b: what is the length of the third side of the triangle(hint: take the total perimeter and subtact off the total lenght of the other 2 sides found in part a)?

part c: do the answers for part a and part b show that the polynomials are closed under addition and subtraction? justify your answer.

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You know the right answer?
The lengths of two sides of a triangle are shown below:

side 1: 3x2 − 2x − 1

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