Evaluate using the identify (a – b)2 = a2 – 2ab + b2.(9.8)2

1.	Evaluate using the identify (a – b)2 = a2 – 2ab + b2.(9.8)2
Answer» (9.8)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 (9.8)² = 96.04

Answer»

(9.8)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

(9.8)² = 96.04

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