If a + b = 12, ab = 22, then (a2 + b2) is equal to

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If a + b = 12, ab = 22, then (a² + b²) is equal to

1. 188
2. 144
3. 34
4. 100

Correct Option: D

a + b = 12, ab = 22
∴ a² + b² = (a + b)² – 2ab
= (12)² – 2 × 22
= 144 – 44 = 100