Question

if p and q are the zeros of the polynomial ax2+bx+c what is the value of p4+q4

Answer 1

Answer:

Correct option is B)

and q are the roots of ax2+bx+c=0.Then

p+q=−ab,pq=ac

qp+pq=pqp2+q2=pq(p+q)2−2pq

=c/a(b2−a2)−2(c/a)=a2b2−2ac×ca=acb2−2ac