The answer is the answer is 0.7 not just .7
You need to note first two things.
1. The function f(x) need to be a continuous function on [-3,-1] (indeed f(x) is a polynomial function, is continuous on every real number x)
2. Take the closed interval [-3,-1]
Now, evaluate f(-3) and f(-1).

So, we have f(-3) < 0 and f(-1). So,
, then by the Intermediate Value Theorem, there exist
such that
.
The product of
will be 
Given expression,
We have to find the product of 
Now using distributive property, we get
Hence the product of
is 
Thus the correct option is (D). 
For more details on distributive property follow the link:
brainly.com/question/13130806
Answer:
piontttttsssssssss
Step-by-step explanation:
(2.7, 2.3)
(2, 1.7)
(1.7, 1.3)
again may be wrong