Homework Help Forum: 11th grade

Posted by kiearra on Sunday, December 28, 2008 at 1:50pm.

factor the expression 2x^2+x-15

• 11th grade - Reiny, Sunday, December 28, 2008 at 1:56pm

  This one also factors. I gave you the previous one, why don't you try this, the factors are quite simple. Let me know what you got.

  
  

• 11th grade - kiearra, Sunday, December 28, 2008 at 2:07pm

  Reiny i got (x+5)(x-3) x=-5 or x=3

  
  

• 11th grade - bobpursley, Sunday, December 28, 2008 at 2:30pm

  Not quite. You have to get +2x^2 (2x-5)(x+3) ought to do it.

  
  

• 11th grade - Reiny, Sunday, December 28, 2008 at 2:30pm

  not quite, did you notice that the first term was 2x^2, so one of the factors must have started with 2x so it had to be (2x...)(x....) YOu should have expanded your answer to see if you get the original question back. I got (2x-5(x+3)= 0 then x = 5/2 or x = -3

  
  

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