I think you forgot to put more information at the beginning.
        
             
        
        
        
Answer:
(b+1)(b²+1)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
No
Step-by-step explanation:
It is not equel
 
        
                    
             
        
        
        
<u>Answer:</u>
An obtuse triangle has two angles 45 and 18. The value of the unknown angle is 
<u>Solution:</u>
Given that two angles of an obtuse triangle is 45 and 18.  
Third angle is θ  
We are asked to find the value of third unknown angle theta
According to <em>angle sum property of triangle</em>, sum of three angles of triangle is 
This means in our case sum of 45, 18 and θ should be 

Hence value of unknown third angle of an obtuse triangle is 