Is $a\left(2x+3\right)=9x+15+x$ an identity

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

With alll of except for the 2 that i did already