mohon bantuanya ya ka

b + q = -b/a = -(-p)/2 = p/2
b.q = c/a = 1/2

1/b² + 1/q² = -b/a
(b²+q²)/(b.q)² = -(-5)/1 = 5
{(b+q)²-2p.q}/(1/2)² = 5
{(p/2)² - 2(1/2)}/(1/4) = 5
{p²/4 - 1} × 4 = 5
p² - 4 = 5
p² = 5+4
p² = 9
p = 3 atau -3
1/b² + 1/q² = c/a
1/(b.q)² = q
1/(1/2)² = q
1/(1/4) = q
4 = q

q - p = 4 - 3 = 1
atau
4 - (-3) = 7