Question

Using suitable identity find 98x107​

Answer 1

$98 \times 107 \\ (100 - 2)(100 + 2) \\ ( {100}^{2} )( {2}^{2} ) \: \: \: \: \: \: \: \: \: (a + b)(a - b) = {a}^{2} + {b}^{2} \\ 10000 \times 4 \\ 40000$

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