It would be: (x + 2)(x+2)
        
             
        
        
        
I believe the answer is:
1+3.000000000i
I am making an educated guess, so sorry if I am wrong.
 
        
                    
             
        
        
        
Step-by-step explanation:
Here is the answer to this question,
His hypothesis would be:
Null hypothesis:
H0: μ(new) - μ(regular) = 0
Alternate hypothesis:
H1: μ(new) - μ(regular) > 0
The consumer is testing to know if his new detergent is better off in cleaning than the regular. The question says that higher scores after cleaning is used to signify which is better based on sufficiently clean garment. Since he is interested in knowing the mean scores of the differences, he should use the hypothesis I stated above. 
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
They are trying to deceive you into not choosing the star that is largest when written as 10^17.
When you rewrite the givens so that the power is 10^17 then the table will look like this.
1.76 * 10^17
2.213 * 10^17
3.142 * 10^17
1.255 * 10^14
It obviously isn't D.
It should be C 
 
        
             
        
        
        
The answer is 256pi if you have a calculator, and it says to put it in 3.14 for pi, do the same steps I show here, but instead of pi, you would put 3.14. But I hope this helps you