Question

if the root of the equation bracket a square + b square bracket close x square - 2 bracket AC + BD bracket close X + bracket c square+9 square=0 bracketclose are equal prove that. a/b=c/d

Answer 1

if roots are equal then root will be ac+bd/a^2+b^2
it will only happens if a/b = c/d or put a= c & b= d