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CMAT
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If (x^2 + y^2 = 25) and (xy = 6), find the value of (x + y).
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A
7
💡 Explanation:
Using the identity ((x + y)^2 = x^2 + y^2 + 2xy), we have ((x + y)^2 = 25 + 2(6) = 37). Therefore, (x + y = \sqrt{37} = 7).