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    2x^ +5x -3 = 0

    The answer says that it is (2x-1) (x+3). Howww??? What two numbers multiply to -3 and add to +5. Help plsss
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    (Original post by Perfection Ace)
    2x^ +5x -3 = 0

    The answer says that it is (2x-1) (x+3). Howww??? What two numbers multiply to -3 and add to +5. Help plsss
    There's a difference between x^2 + 5x - 3 and 2x^2 + 5x - 3.
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    (Original post by Perfection Ace)
    2x^ +5x -3 = 0

    The answer says that it is (2x-1) (x+3). Howww??? What two numbers multiply to -3 and add to +5. Help plsss
    (Original post by Zacken)
    There's a difference between x^2 + 5x - 3 and 2x^2 + 5x - 3.
    aww 1 minute too late :/ i'm getting slow
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    (Original post by Zacken)
    There's a difference between x^2 + 5x - 3 and 2x^2 + 5x - 3.
    Okay, so the difference is there's a number for the x^2? What happens then?
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    so for any quadratic equation ax^2 + bx + c

    the numbers that go in the brackets must add to b, and multiply to give ac.

    so when a=1
    its just 2 numbers that multiply to give c
    but when a=2 for example its numbers that multiply to give ac which will be 2 x c

    https://www.youtube.com/watch?v=_SkmmXiUOv0

    have a watch of this for a more detailed explanation
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    (Original post by gozzabomb)
    so for any quadratic equation ax^2 + bx + c

    the numbers that go in the brackets must add to b, and multiply to give ac.

    so when a=1
    its just 2 numbers that multiply to give c
    but when a=2 for example its numbers that multiply to give ac which will be 2 x c

    https://www.youtube.com/watch?v=_SkmmXiUOv0

    have a watch of this for a more detailed explanation
    Ayeeee, damn, thanks a lot bro! I get it now! Thanks!
 
 
 
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