Question

If ( p + Q) is= 25 and p2+q2 is= 225, then find the value of PQ

Answer 1

Answer:

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Step-by-step explanation:

p+q = 25

p^2+q^2 = 225

(p+q)^2 + 2pq = 225

(25)^2 + 2pq = 225

2pq = 225-625

2pq = -400

pq = -200