Sunday, May 4, 2014

Determine the roots of the equation x^2-5x+6=0.

We'll apply the quadratic
formula


The original equation is:
x^2-5x+6=0


x1 = [-b + sqrt(b^2 -
4ac)]/2a


We'll identify the
coefficients:


a = 1


b =
-5


c = 6


b^2 - 4ac = (-5)^2 -
4*1*6 = 25 - 24


sqrt(b^2 - 4ac) = sqrt(25 -
24)


sqrt(b^2 - 4ac) = 1


We'll
substitute in the formula:


x1 = [-(-5) + sqrt(25 -
24)]/2


x1 = (5+1)/2


x1 =
3


x2 = (5-1)/2


x2 =
2


The roots of the equation are {2 ;
3}.

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