Question 342607
Use the quadratic formula,
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (-7 +- sqrt( 7^2-4*1*(-4) ))/(2*1) }}} 
{{{x = (-7 +- sqrt( 49+16 ))/(2) }}} 
{{{highlight(x = (-7 +- sqrt( 65))/(2)) }}}