Question

10. The legs of an isosceles triangle are (3x2 + 4x + 2) inches and the base is

(4x – 5) inches. Find the perimeter of the triangle.

Answer 1

6x^2 +12x -1

Explanation:

The perimeter is the sum of the two leg lengths and the base length:

P = 2(3x^2 +4x +2) +(4x -5)

= 6x^2 +8x +4 +4x -5

P = 6x^2 +12x -1