Which expression can be used to find the sum of the polynomials?

(9 – 3x2) + (–8x2 + 4x + 5)

Me. i need an answer asap. , you! select the correct answer from each drop-down menu.simplify the given polynomial and use it to complete the statement.the polynomial simplifies to an expression that is a blank with a blank degree of blank .

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

Solve 2x+y=3 x+y=5 in substitution method