I hope this helps you 
x^2+2x+8=0
x^2+2x+1+7=0
(x+1)^2= -7
(x+1)^2= i^2.7
x+1= i.square root of 7
x=-1+ i.square root of 7
        
             
        
        
        
Answer:
<h2>
x² + 9 + 6x </h2>
Step-by-step explanation:
expand and simplify (x+3)²
(x+3)² =
x² + 9 + 2 × x × 3 =
x² + 9 + 6x 
 
        
                    
             
        
        
        
Answer:
a < - 3
Step-by-step explanation:
Given
- 2a > 6
Divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity, thus
a < - 3
 
        
             
        
        
        
Yes you did do this correctly
        
                    
             
        
        
        
the table below: 
Grade        In favor  	Opposed	Undecided    Total 
Grade 9     6                   4                       8                18
Grade 10     10        	11                        9                30
Grade 11     12        15                      11                  38
Grade 12     15        6                      14                  35
If the principal randomly selects a student in grade 10 from this survey, 
the probability that the student is opposed to extending the school day
P ( student in grade 10 is opposed)= Number of student in opposed(grade10) / total number of students in grade 10
Number of student opposed who is in grade10 = 11
total number of students in grade 10 = 30
P( student in grade 10 is opposed)=  
= 0.37
the probability that the student is opposed to extending the school day= 0.37