The equivalent expression is ~
Let's evaluate f(b - 2) ~
You can factor (x^3 and 6x^2) and (-4x and -24).
So x^2(x+6) - 4(x+6)
(x^2-4)(x+6)
(x-2)(x+2)(x+6)
B. (2,20] is the correct answer
Y : x
14 : 18
31 : x
18*31/14=x
39.85714286
ANSWER
x=39.86
If the answer is an equation then it is:
x=(4y+15)/(5-3y)