Question

simplify and write in the exponential form with negative exponent.

pls help me with this maths.

it's of class 8.


And I dont want any bad answer if you dont know then just skip the question and dont write that sorry I cant answer only those answer who know this.

pls it's a humble request.
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Answer 1

${( - 7)}^{3} \times { (\frac{1}{ - 7} )}^{ - 9} \div {( - 7)}^{10} \\ {( - 7)}^{3} \times {( - 7)}^{9} \div {( - 7)}^{10} \\ {( - 7)}^{3} \times {( - 7)}^{ - 1} \\ {( - 7)}^{2} \\ 49$