Question 458365: Given that p and q are the roots of the quadratic equation 2x^2+2px=q^2,if p-q=6 find the value of pq,thanks~~ Found 2 solutions by robertb, josmiceli:Answer by robertb(5830) (Show Source):
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==> The sum of the roots are p + q = -p, or 2p = q.
Now p - q = 6 ==> p - 2p = 6, or p = -6.
==> q = 2*-6 = -12, so that pq = -6*-12 = 72.
