Question

p,q,r,s are non zero p and q are roots of eqn :
\[x^2+rz+s=0\];r and s are roots of eqn :
\[ x^2+px+q=0\] ;find p+q+r+s=

Answer 1

this was just posted, and my start was that
\[p+q=-r, r+s=-p\] and i am thinking that the sum had to be zero, but need another equation