Answer:
x³ - 8x² - 11x + 148
Step-by-step explanation:
Given that x = 6 + i is a root then x = 6 - i is also a root
Complex roots occur as conjugate pairs.
The factors are therefore (x - (6 + i)) and(x - (6 - i))
Given x = - 4 is a root then (x + 4) is a factor 
The polynomial is the product of the factors, that is
p(x) = (x + 4)(x - (6 + i))(x - (6 - i)) 
       = (x + 4)(x - 6 - i)(x - 6 + i)
       = (x + 4)((x - 6)² - i²)
       = (x + 4)(x² - 12x + 36 + 1)
       = (x + 4)(x² - 12x + 37) ← distribute
       = x³ + 4x² - 12x² - 48x + 37x + 148
       = x³ - 8x² - 11x + 148
  
 
        
             
        
        
        
To convert a mixed fraction into an improper fraction, we must follow some steps.
First, we take the whole part and multiply it by the denominator of the fraction.
In this case, we take 2 and multiply it by 8.
Now we add the numerator:
16+3=19
The denominator stays the same:

Hope it helps! :)
 
        
             
        
        
        
4 - 4 + 4 = 4.
four minus for plus four equals four.