Home › If x² + y² = 25 and xy = 12, then (x + y)² =
If x² + y² = 25 and xy = 12, then (x + y)² =
A49
B37
C25
D13
Answer & Solution
Correct answer: A. 49
1. (x + y)² = x² + 2xy + y².
2. = (x² + y²) + 2xy = 25 + 2 × 12.
3. = 49.
_Source: KMAT Karnataka 2022 PYQ Q.62_
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