Question 491375

{{{4.5x^2-6x + 15 = 0}}}


{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}...note that {{{a=4.5}}}, {{{b=-6}}} and {{{c=15}}}


{{{x = (-4.5 +- sqrt((4.5)^2-4*(4.5)*15 ))/(2*4.5) }}}


{{{x = (-4.5 +- sqrt(20.25-270 ))/9 }}}


{{{x = (-4.5 +- sqrt(-249.75 ))/9 }}}


{{{x = (-4.5 +- sqrt((-1)249.75 ))/9 }}}


{{{x = (-4.5 +-15.8*i)/9 }}}

solutions:

{{{x = (-4.5 +15.8*i)/9 }}}


{{{x = -4.5/9 +(15.8*i)/9 }}}


{{{x = -0.5 +1.76i }}}

or

{{{x = (-4.5 -15.8*i)/9 }}}


{{{x = -4.5/9 -(15.8*i)/9 }}}


{{{x = -0.5 -1.76i }}}