Question

expand (99)³ with explanation
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Answer 1

${(99)}^{3} \\ = ( {100 - 1)}^{3} \\ = ( {100})^{3} - ( {1})^{3} - 3( {100}^{2} )(1) + 3(100)( {1}^{2)} \\ = 1000000 - 1 - 30000 + 300 \\ = 969999 + 300 \\ = 970299$

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