Answers

2015-08-23T16:53:14+08:00
2x2-15x=0

in factoring
  (answer :)       x ( 2x - 15) = 0

(checking:)      x times 2x = 2x2
                      x times -15 = -15x
        
   
(things to remember:)        in rules  by multiplying unlike sign.

                                        it is possible the result will be negative 15x                                                     ( -15x )
    
   ....
 that's all  thank  you ...   :) 
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