Answer:
The answer to your question is:
Step-by-step explanation:
                                              x² + 3x - 5
                                     x² + 3x + (3/2)² = 5 + (3/2)²
                                          (x + 3/2)² = 5 + 9/4
                                          (x + 3/2)² = (20 + 9) /4
                                           (x + 3/2)² = 29/4
                                           x + 3/2 = ±√29 / 2
                                      
 x 1 = -3/2 + √29/2                               x2 = -3/2 - √29/2
x1 = 1.19                                                x2 = -4.19
 
        
             
        
        
        
Answer:
{ 9/2 , square root of 100, 5.123}
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The value of BEF = 36°
Step-by-step explanation:
Given:
Angle AED = 90°
Angle BEF = 3x°
Angle CEF = 54°
Find;
The value of BEF
Computation:
We know that;
Angle AED = Angle BEC (Vertical opposite angle)
So,
Angle AED = Angle Angle BEF + Angle CEF
90 = 3x + 54
3x = 90 - 54
3x = 36
x = 36 / 3
x = 12
The value of BEF = 3x 
The value of BEF = 3(12)
The value of BEF = 36°