Answers

  • Brainly User
2015-11-22T14:14:53+08:00
2x²  +  5x   = 0
 5        4

LCD: (5) (4)

(5)(4) 2x²  + (5)(4) 5x  = 0
 5                    4
 
 8x² + 25x = 0

x (8x + 25) = 0

x = 0    
 
 8x + 25 = 0
 
8x = -25

8x = -25        
 8      8

x = -25
       8

The roots are x = 0  and x = - 25/8.

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