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p2+10d+7
p2 + 3p = p (p + 3)
p2 + 2pq + q2 = 1q2 + 2pq + (p2 - 1) = 0q = 1/2 [ -2p plus or minus sqrt( 4p2 - 4p2 + 4 ) ]q = -1 - pq = 1 - p
p2
P2 + 13p - 30 = 0 Answer: p= -15, p = 2