sp0rk Posted July 4, 2004 Share Posted July 4, 2004 I'm taking a course online right now, and I'm stuck on a problem. x^2 + 2x + 1 = 3x + 3 I haven't had Algebra in awhile, so I'm not sure what to do with this to factor it. The site doesn't really cover the algebraic manipulation of the proble, just the Trigonometry part. Any help appreciated. Thanks. Link to comment Share on other sites More sharing options...
Soviet Posted July 4, 2004 Share Posted July 4, 2004 Uhh... Drunk and dun remember anything from highschooll.... x^2 + 2x + 1 = 3x + 3 -2x +2x x^2 + 1 = 5x + 3 - 1 +1 x^2= 5X + 4 umm... no friggin clue what to do now... sad? not really, you never use this **** in real life. Tell your teacher she's wasting her time teaching meaningless subjects and that you want something you'll use after HS... She'll tell you how it is usefull then call her a lying bitch.. BECUASE SHE IS! Link to comment Share on other sites More sharing options...
campm Posted July 4, 2004 Share Posted July 4, 2004 subtract the 3x + 3 to the other side, giving x^2 - x - 2 = 0 then come up with two numbers that add up to -1 (middle coefficient) and multiply together to get -2 (last one) and those numbers are: +1 and -2, so then put those in factor form : (x + 1)(x - 2) so the solution is x = -1 and x = +2 Link to comment Share on other sites More sharing options...
BigDaddy Posted July 4, 2004 Share Posted July 4, 2004 subtract the 3x + 3 to the other side, givingx^2 - x - 2 = 0 then come up with two numbers that add up to -1 (middle coefficient) and multiply together to get -2 (last one) and those numbers are: +1 and -2, so then put those in factor form : (x + 1)(x - 2) so the solution is x = -1 and x = +2 (Y) this is high school stuff rite? :D Link to comment Share on other sites More sharing options...
neowin_hipster Posted July 4, 2004 Share Posted July 4, 2004 First set it equal to zero. Complete the square. If you never ever see a factor and get stuck use this formula x = ( - b +- sqrt( b^2-4ac ) ) / ( 2a ) Link to comment Share on other sites More sharing options...
campm Posted July 4, 2004 Share Posted July 4, 2004 I kinda didn't feel like doing quadratic formula this late at night lol but whateva :) Link to comment Share on other sites More sharing options...
Soviet Posted July 4, 2004 Share Posted July 4, 2004 I kinda didn't feel like doing quadratic formula this late at night lolbut whateva :) +1 :p Welcoem to noewin! Vodka i son me1!! Link to comment Share on other sites More sharing options...
kramitman_87 Posted July 4, 2004 Share Posted July 4, 2004 subtract the 3x + 3 to the other side, givingx^2 - x - 2 = 0 then come up with two numbers that add up to -1 (middle coefficient) and multiply together to get -2 (last one) and those numbers are: +1 and -2, so then put those in factor form : (x + 1)(x - 2) so the solution is x = -1 and x = +2 what he said that is correctcct Link to comment Share on other sites More sharing options...
sp0rk Posted July 4, 2004 Author Share Posted July 4, 2004 Ahh thank you. I tried subracting the stuff before but for some reason I had the criteria mixed up to factor. Thanks again! Link to comment Share on other sites More sharing options...
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