If x + y = 7 and x² + y² = 25, then find the value of √(xy).

Question

KnowledgeBoat · Accepted Answer

Given, x + y = 7 x2 + y2 = 25 By using the identity, (x + y)2 = x2 + y2 + 2xy ⇒ (7)2 = 25 + 2xy ⇒ 49 = 25 + 2xy ⇒ 49 - 25 = 2xy ⇒ 2xy = 24 ⇒ xy = ⇒ xy = 12 ⇒ ⇒ ⇒ . Hence, .

Mathematics

If x + y = 7 and x² + y² = 25, then find the value of √(xy).

Factorisation

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Mathematics

If x + y = 7 and x² + y² = 25, then find the value of √(xy).

Factorisation

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