Question

i need ans for 7 to the power-20 -7 to the power-21

Answer 1

☆HEY FRIEND!!!☆

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HERE IS YOUR ANSWER ☞
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${7}^{ - 20} \times {( - 7)}^{ - 21} \\ \\ = ( {7}^{ - 20} ) \times ( - )( {7}^{ - 21} ) \\ \\ = ( - )( {7}^{ - 20} \times {7}^{ - 21} ) \: \: \: \: \: \: (since.... ( + ) \times ( - ) \: always \: = ( - )) \\ \\ = - {7}^{ - 41} \\ \\ = - \frac{1}{ {7}^{41} } \: \: \: \: \:$



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HOPE IT WILL HELP YOU ☺☺☺
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DEVIL_KING ▄︻̷̿┻̿═━一