Maharashtra State BoardSSC (English Medium) 7th Standard
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Expand: (98)2 - Mathematics

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Sum

Expand: (98)2

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Solution

(98)2

= (100 - 2)2

= 1002 - 2 x 100 x 2 + 22

= 10000 - 400 + 4

= 9604.

Concept: Expansion of (a - b)2 = a2 - 2ab + b2
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