What is the coefficient of the third term of the polynomial? (In other words, what is C?) (x + 2)(x² −3x − 2) = x³ −x² −Cx − 4

Plz hurry evaluate the expression a+b where a=8 and b=19

Solve 13 + w/7= -18 (w/7 is a fraction)

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