Question

Find p3-93, when p- q = 5 and pq = - 4​

Answer 1

Answer:

-80

Step-by-step explanation:

given,

p-q = 5,---->eqn1

pq = -4,

=> q = -4/p,---->eqn2

substitute eqn 2 in eqn 1,

therefore,

p-(-4/p) = 5,

=>p+4=5p,

=>p=1.

therefore,

p3-93

= 13-93,

=-80.