find the difference

Question

(-7x^2 + 5x -9) - ( 2x^2 + 7x + 5)

Answer 1

( - 7 x ^ 2 + 5 x - 9 ) - ( 2 x ^ 2 + 7 x + 5 ) =

- 7 x ^ 2 - 2 x ^ 2 + 5 x - 7 x - 9 - 5 =

- 9 x ^ 2 - 2 x - 14