Question

Ifpx^2+3x+q=0 has roots x=-1 and-2 findq-p

Answer 1

pX1 -3 + q =0
q = 3 -p
pX4 -6 +q= 0
q= 6-4p
3-p = 6-4p
3p = 3
p=1

1-3 +q=0
q=2