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| 1. |
106 x 106 - 94 x 94 = ? |
| Answer» 106 x 106 - 94 x 94 = (106)2 - (94)2 = (106 + 94)(106 - 94) [Ref: (a2 - b2) = (a + b)(a - b)] = (200 x 12) = 2400. | |