False because they don't have the same length and shape you know they may be triangle but the their length are different.
        
             
        
        
        
Answer:
Step-by-step explanation:
x² + 4x - 1 - x =x² + 4x -x - 1  { bring the like terms together and add}
                      = x² + 3x - 1
 
        
             
        
        
        
we have been asked to find the sum of the series 

As we know that a geometric series has a constant ratio "r" and it is defined as

The first term of the series is 
Geometric series sum formula is 

Plugin the values we get

On simplification we get

Hence the sum of the given series is  
 
 
        
             
        
        
        
Answer:
satingin ko po at B I not sure
Step-by-step explanation:
 i hope it help