How to find the value of p 3 - q 3 if p-q=-4 and pq=-4
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(p-q) ^3 =p^3 - q^3 - 3pq(p-q)
(-4)^3=p^3 - q^3 - 3*(-4)(-4)
-64=p^3 - q^3 - 48
-64+48=p^3 - q^3
-16=p^3 - q^3
(-4)^3=p^3 - q^3 - 3*(-4)(-4)
-64=p^3 - q^3 - 48
-64+48=p^3 - q^3
-16=p^3 - q^3
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