Ay worn 10 points) (06.02 MC)
The lengths of two sides of a triangle are shown.
Side 1: 3x2 - 4x - 1
Side 2: 4x - y2 + 5
The perimeter of the triangle is 5x – 2x2 + 3% – 8.
Part A: What is the total length of the two sides, 1 and 2, of the triangle? Show your work. (4 points)
Part B: What is the length of the third side of the triangle? Show your work. (4 points)
Part C: Do the answers for Part A and Part B show that the polynomials are closed under addition and subtraction? Justify
2 Source
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В I 5 x x
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