3x^2+5x-28=0 solve this for me please

Find the difference (8ab+a+2) - (3ab+6)

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

50 points and will mark brainlest 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: