Question

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2.) The lengths of two sides of a triangle are shown below:
Side 1: 3x^2-4x-1
Side 2: 4x-x^2+5
He perimeter of the triangle is 5x^3-2x^2+3x-8

Part A: What is the total length of the two sides, 1 and 2, of the triangle? (4 points)

Part B: What is the length of the third side of the triangle? (4 points)

Part C: Do the answers for Part A and Part B show that the polynomials are closed under addition and subtraction? Justify your answer. (2 points)

Answer 1

part a????

Answer 2

is it the answer

Answer 3

the answer to part a is 2x^2+4

Answer 4

then its very easy
part a you got by just adding the 2 equations

Answer 5

part b???

Answer 6

part b=perimeter-(side1+side2)

Answer 7

am i correct

Answer 8

i did not understand part c

Answer 9

yes you are right but what would the sum be after you subtracted the perimeter?

Answer 10

what sum