The lengths of two sides of a triangle are shown below

side 1: 8x2 - 5x-2

side 2: 7x - x2 + 3

the perimeter of the triangle is 4x3 - 3x2 + 2x - 6.

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)