Question 1021439


{{{(-8y)^2+2y+7=0}}}

{{{64y^2+2y+7=0}}}


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

{{{y = (-2 +- sqrt( 2^2-4*64*7))/(2*64) }}}

{{{y = (-2 +- sqrt( 4-1792))/128 }}}

{{{y = (-2 +- sqrt( -1788))/128 }}}

{{{y = (-2 +- 2sqrt( 447)*i)/128 }}}......simplify


{{{y = (-1 +- sqrt( 447)*i)/64 }}}

solutions:

{{{y = (-1 + sqrt( 447)*i)/64 }}}
or
{{{y = (-1 - sqrt( 447)*i)/64 }}}