1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Can we do this with greater than sign

  1. Jan 17, 2005 #1
    Can we do this with "greater than" sign

    If [tex](2x-9)(x+3)\geq0[/tex] then can we say [tex](2x-9)\geq0[/tex] and [tex](x+3)\geq0[/tex] and solve them seperately ? I am not sure if i can do this because of the [tex]\geq[/tex] sign.

    Hmm wrong section. Actually this is part of my homework anyway. :biggrin:
     
  2. jcsd
  3. Jan 17, 2005 #2
    Yeah you can do that because you are dividing both sides by the binomials and 0/ by anything equals 0.
     
  4. Jan 17, 2005 #3

    Galileo

    User Avatar
    Science Advisor
    Homework Helper

    The product will also be positive if both factors are negative.
     
  5. Jan 17, 2005 #4
    this is part of the solution only....
    Hints
    could both values inside the bracket be negative?
     
  6. Jan 17, 2005 #5
    Thx a lot all and thx again for the hint.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?