Question

$(98) {}^{2}$
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Answer 1

9604

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Answer 2

$(98 ^{2} ) \\ = ( {90 + 8})^{2} \\ \\ = 8100 + 2 \times 90 \times 8 + 64 (using \: the \: (a + b)^{2} \: formula) \\ = 8100 + 1440 + 64 \\ = 9604$

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