Question

(a) If p² + q² = 252 and p+q = 16, evaluate pq



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Answer 1

Answer:

p+q=16 p²+q²=252

or, (p+q)²- 2pq=252

or, (16)²-2pq=252

or, 256-2pq=252

or, -2pq=252-256

or, -2pq=-4

or, pq=4/2