Answer:
See below.
Step-by-step explanation:
We know that 
                               tanA + tan B
tan (A + B)     =     ---------------------                       
                                1 - tanAtanB
Substituting for A + B
tan (A + B) = tan pi/4 = 1.
             tanA + tan B 
So        ------------------   =    1
              1 - tanAtanB 
Therefore   tanA + tan B =   1 - tanAtanB.
 
        
             
        
        
        
It can tell you the general pattern or that it is far from the other points in scatter plot.
        
                    
             
        
        
        
Answer:
3.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
True.
Step-by-step explanation:
It is because it is in the form  and this equals
 and this equals  .
.
Why it is in that form:  well comparing   , we have
, we have  . Testing, plug in those values:
. Testing, plug in those values:


 .
.
This has the squared form of  .
.
Test if you like:


Use foil to expand:
First: x(x)=x^2
Outer: x(1)=x
Inner: 1(x)=x
Last: 1(1)=1
---------------Add together

It does indeed equal.
 
        
             
        
        
        
The answer is 2 first you add then multiple