Question 76100
X^2-6X+8=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
X=(6+-SQRT[-6^2-4*1*8])/2*1
X=(6+-SQRT36-32)/2
X=(6+-SQRT4)/2
X=(6+-2)/2
X=(6+2)/2
X=8/2
X=4 ANSWER.
X=(6-2)/2
X=4/2
X=2 ANSWER.