Question 404456


{{{9y^2-48y-36}}}.use quadratic formula


{{{y = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}..........{{{a=9}}}, {{{b=-48}}} and {{{c=-36}}}



{{{y = (-(-48) +- sqrt( (-48)^2-4*9*(-36) ))/(2*9) }}}

{{{y = (48 +- sqrt( 2304-36(-36) ))/18 }}}

{{{y = (48 +- sqrt( 2304 + 1296 ))/18 }}}

{{{y = (48 +- sqrt( 3600))/18 }}}

{{{y = (48 +- 60)/18 }}}


{{{y1 = (48 + 60)/18 }}}

{{{y1 = 108/18 }}}

{{{y1 = 6 }}}


{{{y1 = (48 - 60)/18 }}}

{{{y1 = -cross(12)2/cross(18)3 }}}

{{{y1 = -(2/3)}}}