Question

please answer this questions for me please q.no.7 please and no spam please​

Answer 1

Step-by-step explanation:

b)

${8}^{ - \frac{1}{3} } \times {8}^{ - \frac{1}{3} } ( {8}^{ \frac{1}{3} } - {8}^{ \frac{2}{3} } ) \\ = {( {(2)}^{3} )}^{ - \frac{1}{3} } \times ( { {(2)}^{3}) }^{ - \frac{1}{3} } ( {( {2)}^{3}) }^{ \frac{1}{3} } - ( {( {2)}^{3}) }^{ \frac{2}{3} } ) \\ = {2}^{ - \frac{3}{3} } \times {2}^{ - \frac{3}{3} } ( {2}^{ \frac{3}{3} } - {2}^{ \frac{6}{3} } ) \\ = {2}^{ - 1} \times {2}^{ - 1} (2 - {2}^{2} ) \\ = \frac{1}{2} \times \frac{1}{2} (2 - 4) \\ = \frac{1}{2} \times \frac{1}{2} \times - 2 \\ = - \frac{1}{2} \\ or \\ = { - 2}^{ - 1}$

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