Question 1081450


{{{(2x-3)(x+1)=-1}}}

{{{2x^2-3x+2x-3=-1}}}

{{{2x^2-x-3+1=0}}}

{{{2x^2-x-2=0}}}

{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}

{{{x = (-(-1) +- sqrt( (-1)^2-4*2*(-2) ))/(2*2) }}}

{{{x = (1 +- sqrt( 1+16 ))/4 }}}

{{{x = (1 +- sqrt( 17 ))/4 }}}

exact solutions:

{{{x = (1 + sqrt( 17 ))/4 }}} or

{{{x = (1 - sqrt( 17 ))/4 }}}

approximately:

{{{x =1.28}}} or {{{x =-0.78}}}