Question

If p-q=-7 and pq=-10 find p^3-q^3

Answer 1

Answer:

(p-q)² = p²+q² -2pq

(-7)²=p²+q²-2×(-10)

49-20 =p²+q²

p²+q²=29

Step-by-step explanation:

p³-q³ = (p - q)(p²+q²+2pq)

p³-q³ = (-7)(29+2×-10)

p³-q³ = 63