Add. (9x^2+5x-4)+(-8x^2+9x-9)

Answer 1

9 x ^ 2 + 5 x - 4 + ( - 8 x ^ 2 + 9 x - 9 ) =

9 x ^ 2 + 5 x - 4 - 8 x ^ 2 + 9 x - 9 =

9 x ^ 2 - 8 x ^ 2 + 5 x + 9 x - 4 - 9 =

x ^ 2 + 14 x - 13