Question

(2power5÷2power8)×2power-7

Answer 1

!! Hay !!

your answer is

$( {2}^{5} \div {2}^{8} ) \times {2}^{ - 7} \\ \\ = {2}^{5 - 8} \times {2}^{ - 7} \\ \\ = {2}^{ - 3} \times {2}^{ - 7} = {2}^{ - 3 + ( - 7)} \\ = {2}^{ - 3 - 7} = {2}^{ - 10}$

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Hope it help you
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Answer 2

${2}^{5 } \div {2}^{8} \times {2}^{ - 7}$
${2}^{5 - 8} \times {2}^{ - 7}$
${2}^{ - 3} \times {2}^{ - 7}$
${2}^{ - 3 + ( - 7)}$
${2}^{ - 10}$