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Posted by on Friday, February 4, 2011 at 3:52pm.

(2x(tothe2ndpower)-3x+4)-(3x(tothe2ndpower)-x+2= ????

  • algebra - , Friday, February 4, 2011 at 4:50pm

    2x^2 - 3x + 4 - (3x^2 - x + 2) = 0
    -x^2 - 2x + 2 = 0
    x^2 + 2x - 2 = 0

    I will complete the square, in this case it is easier than using the formul
    x^2 + 2x + 1 = 2+1
    (x+1)^2 = 3
    x+1 = ± ?3
    x = -1 ± ?3

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