Which of the following is equivalent to (x^2 − 9)(x + 2) − (x^2 + 4x + 4)(x − 5)?

Select one:
A. 3x^2
B. 3x^2 + 2
C. 3x^2 - 13x + 2
D. 3x^2 + 7x + 2

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

-1/4 > -1 2/3. -1/4 is greater than -1 2/3 because it is closer to 0 on the number line.