If the roots of the equation 2x^2-x+6=0 are alpha and beta, find the eqn whose roots are?

(i) 2alpha, 2beta
(ii) 1/alpha, 1/beta
(iii) alpha +2beta, beta+2alpha

given answer are
(i) x^2-x+12=0
(ii) 6x^2-x+2=0
(iii) 2x^2-3x+7=0
2 answers 2