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p²q & pq²
= p + q = -b / a = -q
p x q = c / a = -2
p²q + pq² = pq ( p+q)
= -2 (-4)
= 8
p²q - pq² = p³xq³
= ( p x a) = (-2)³
= -8
= x² - (p²qq²) x + ( p²q x pq ) = 0
= x² -8x - 8 = 0