Answers

2015-08-23T17:24:38+08:00
2x2 -3x-11=0

=2x2\2 - 3x/2 -11\2 = 0

= x2 - 3x/2 - 11/2 = 0   

=x2 - 3x/2 = 11\2 

= x2 - 3x/2 + 9/4 = 11/2 + 9/4

= (x - 3/2 )2 = 62

( then use extracting square roots  to get your finale  answer... )
         
     ............    :)


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