Question
Download Solution PDFIf X + Y = 23 and XY = 126; what is the value of (X)² + (Y)² = ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
X + Y = 23
XY = 126
Formula used:
(X + Y)2 = X2 + Y2 + 2XY
Calculation:
232 = X2 + Y2 + 2 × 126
⇒ 529 = X2 + Y2 + 252
⇒ X2 + Y2 = 529 - 252
⇒ X2 + Y2 = 277
∴ The correct answer is option (2).
Last updated on May 21, 2025
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