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Posted by on Friday, April 9, 2010 at 1:01pm.

HOW MANY TIMES DOES THE GRAPH OF
2
2X -2X+3 INTERSECT THE X-AXIS?

  • MATH LIKE ALWAYS - , Friday, April 9, 2010 at 3:10pm

    2 x^2 - 2 x + 3 = 0

    x = [2 +/- sqrt (2^2-4*2*3)] /4

    = [ 2 +/- sqrt (4 - 24) ]/4

    = [ 2 +/- sqrt (-20) ] / 4

    - 20 is imaginary so this parabola never crosses the x axis.

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