The problem is asking you to move around the vertices of points A, B, and Y. Once you do that, all you have to do is look at each angle measure and record it. Once again, the sum of all interior angles in a triangle should be 180° no matter what.
Answer:
3x^3 - 11x^2 + 93x - 105
Step-by-step explanation:
(x+5) (x-9) (x+1) (3) FOIL (First, Outside, Inside, Last)...
x^2 - 9x + 5x - 35 (3x+3) Multiply
3x^3 + 3x^2 - 27x^2 - 27x + 15x^2 + 15x - 105x - 105 Combine Like Terms...
3x^3 - 11x^2 + 93x - 105
I think the answer might be 72
