Question

please solve these sums on cpy ​

Answer 1

Answer:

1st

7×7×7×7=2401

2nd

(-5)×(-5)×(-5)= - 125

3rd

3/4×3/4×3/4×3/4×3/4

=243/1024

4th

(-5/2)×(-5/2)= 25/4

Answer 2

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Evaluate:

$(i)\:7⁴$

$(ii)\:(-5)³$

$(iii)\:({\frac{3}{4}})⁵$

$(iv)\:({\frac{-5}{2}})²$

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The values.

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$(i)\:7⁴$

$7⁴$

➳ ${7}\times{7}\times{7}\times{7}$

➳ $2401$

$(ii)\:(-5)³$

$(-5)³$

➳ ${(-5)}\times{(-5)}\times{(-5)}$

➳ $(-125)$

$(iii)\:({\frac{3}{4}})⁵$

$({\frac{3}{4}})⁵$

➳ $({\frac{3⁵}{4⁵}})$

➳ ${\frac{(3×3×3×3×3)}{(4×4×4×4×4)}}$

➳ ${\frac{(243)}{1024)}}$

$(iv)\:({\frac{-5}{2}})²$

$({\frac{-5}{2}})²$

➳ $[{\frac{(-5)²}{2²}}]$

➳ ${\frac{(-5)×(-5)}{(2×2)}}$

➳ ${\frac{25}{4}}$

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$(i)\:7⁴$ = $2401$

$(ii)\:(-5)³$ = $(-125)$

$(iii)\:({\frac{3}{4}})⁵$ = ${\frac{(243)}{1024)}}$

$(iv)\:({\frac{-5}{2}})²$ = ${\frac{25}{4}}$

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