Question

(1/8^25) - (1/8^26)

I have sent the picture of the question in attachment and please write the steps also​

Answer 1

Answer:

a) I guess

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Answer 2

(1/8^25) - (1/8^26)

${8}^{ - 25} - {8}^{ - 26} = 8 {}^{ - 25} (1 - {8}^{ - 1} ) \\ = \frac{7}{8} \times \frac{1}{8 {}^{25} } = \frac{7}{ {8}^{26} }$

Answer is option b.

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