Question 904025

{{{ x^2-16x+113=0 }}}


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


{{{x = (- (-16) +- sqrt( (-16)^2-4*1*113 ))/(2*1) }}} 

{{{x = (16 +- sqrt( 256-452 ))/2 }}} 

{{{x = (16 +- sqrt( -196 ))/2 }}} 

{{{x = (16 +- i*sqrt( 196 ))/2 }}}

{{{x = (16 +- i*14)/2 }}}


{{{x = (cross(16)8 +- i*cross(14)7)/cross(2)1 }}}


{{{x = 8 +- 7i }}}

solutions:

{{{x = 8 + 7i }}}

or

{{{x = 8 - 7i }}}