What is the result when (4x^2-5x+7) is added to (x^2-3x-6)? show your work. PLEASE HELP ME!!

( 4 x ^ 2 - 5 x + 7 ) + ( x ^ 2 - 3 x - 6 ) =

4 x ^ 2 + x ^ 2 - 5 x - 3 x + 7 - 6 =

5 x ^ 2 - 8 x + 1