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QUESTION
Q
If the number p is 5 more than q and the sum of the squares of p and q is 55, then the product of p and q is ?
Solution
Given p = q + 5
p2 + q2 =55
⇒ (q + 5)2 + q2 = 55
⇒ 2q2 + 10q + 25 = 55
⇒ 2q2 + 10q − 30 =...
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