X square/3 - x/3 -44

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Will give a: 122 b: 90 c: 48 d: 180

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking