1. Which polynomial is equal to (4x^2 - 3x - 1)+(-3x^2 + 5x - 8)

A.) x^2 + 2x + 9
B.) x^2 + 2x - 9
C.) 7x^2 - 8x + 8
D.) x^4 - 2x^2 - 9

2. Which expression is equivalent to this expression?
(7x^2 - 4x + 5) - (3x^2 - 6x + 2)

A.) 4x^2 - 10x + 7
B.) 4x^2 + 2x + 3
C.) 4x^2 - 2x + 3
D.) 21x^2 - 10x + 7