If x = 4 and y = -2, then x² + y² = ____?
- 10
- 15
- 20
- None of these
Explanation
Plugging in the values:
x² + y² = (4)² + (-2)²
= 4 × 4 + (-2) × (-2)
= 16 + 4
= 20
Last verified on 15-03-2026
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- 8
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Plugging in the values:
x² + y² = (4)² + (-2)²
= 4 × 4 + (-2) × (-2)
= 16 + 4
= 20
Last verified on 15-03-2026
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