Question

if alpha,beta r zeroes of quadratic polynomial 2x²+5x+k such that(alpha+beta)²- alpha×beta=24

Answer 1

See (alpha+beta)2 means sum of zeros that is -5/2. Now you have to find product of zero that is k/2. Then put these values in alpha+beta and alpha ×beta ur ans will be 25/4 - k2/4=24. from here solve ur self good luck