Question 82085
x^2-5x-1=-7
x^2-5x-1+7=0
x^2-5x+6=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
x=(5+-sqrt[-5^2-4*1*6])/2*1
x=(5+-sqrt[25-24])/2
x=(5+-sqrt1)/2
x=(5+-1)/2
x=(5+1)/2 
x=6/2
x=3 answer.
x=(5-1)/2
x=4/2
x=2 answer.