Solution:
We have been asked to find the simplified expression of

0.18 is bigger because it is closer to 1 and 0.8 is closer to 0
Answer:
The factor form of given expression is (x-4)(x-2i)(x+2i).
Step-by-step explanation:
The given expression is

It can be written as

According to the rational root theorem, all possible rational roots are in the form of

Where, a₀ is constant term and
is leading coefficient.

Since the value of f(x) is 0 at x=4, therefore 4 is a root of the function and (x-4) is a factor of given expression.
Use synthetic method to find the remaining factors.



Therefore the factor form of given expression is (x-4)(x-2i)(x+2i).
To write the number is standard form we need to move the decimal point six times to the right, then:

therefore the answer is b.
Isolate the x. Note the equal sign. What you do to one side, you do to the other.
Subtract 9 from both sides
x + 9 (-9) = -4 (-9)
x = -4 - 9
x = -13
-13 is your solution
hope this helps