Question

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

Side 1: 3x2 − 6x − 10

Side 2: 9x + 5x2 − 8

The perimeter of the triangle is 6x3 + 10x2 − 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 Perimeter minus 2 sides combined.

(10 points)

Answer 1

Part A)
`(3x^2 - 6x - 10) + (5x^2 + 9x - 8 ) =8x^2 + 3x - 18`

Part B)
`(10x^2 - x - 3) - (8x^2+3x-18) = 2x^2 -4x+15`