Answer + ! hassan writes an algebraic expression with four terms. the x-term has a coefficient of 2, and the z-term has a coefficient of -1. the expression has a constant term less than zero. which expression could he have written? a. 2x + z + 5 - 6z^2 b. 2x - z - 5 + 2z^2 c. -2x - z - 5 + 2z^2 d. -2x + z - 5 + 2z^2