2. simplify the following expression.
4(9+ 3x) + (2x2 - 1) – 15 – (2x + 6) + x2

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Identify the polynomial. a2b - cd3 a. monomial b. binomial c. trinomial d. four-term polynomial e. five-term polynomial

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2