Evaluate using the identity (a + b)2 = a2 + 2ab + b2(10.2)2

1.	Evaluate using the identity (a + b)2 = a2 + 2ab + b2(10.2)2
Answer» (10.2)² = (10 + 0.2)² (a + b)² = a²+ 2ab + b² Here a = 10, b=0.2 [(10 + (0.2))]² = 10² + 2.(10).(0.2) + (0.2)² = 100 + 4 + 0.04 (10.2)² = 104.04

Answer»

(10.2)² = (10 + 0.2)²

(a + b)² = a²+ 2ab + b²

Here a = 10, b=0.2

[(10 + (0.2))]² = 10² + 2.(10).(0.2) + (0.2)²

= 100 + 4 + 0.04

(10.2)² = 104.04

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