Question

given that p and q are two non-zero constants. If the equation x2 + px + q = 0 has roots u and v, then :

Answer 1

Sum of roots : p + q = -p

=> 2p = -q

Product of roots : pq = q => p =1 (since q is non-zero)

Thus, p=1 and q=-2

Next, the least value can be conveniently found using -D/4a = -9/4

Answer 2

hope this will help you