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Simplify: 25×52×t8103×t4 - Mathematics

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Question

Simplify:

`(25 xx 5^2 xx t^8)/(10^3 xx t^4)`

Sum

Solution

`(25 xx 5^2 xx t^8)/(10^3 xx t^4)`

= `(5 xx 5 xx 5^2 xx t^2)/((5 xx 2)^3  xx t^4)`      ...[(a × b)m = am × bm]

= `(5^(1  +  1  +  2) xx t^8)/(5^3 xx 2^3 xx t^4)`        ...[am × an = am + n]

= `(5^4 xx t^8)/(5^3 xx 2^3 xx t^4)`

= `(5^(4  -  3) xx t^(8  -  4))/2^3`          ...[am ÷ an = am + n]

= `(5^1xx t^4)/(2 xx 2 xx 2)`

= `(5t^4)/8`

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Chapter 13: Exponents and Powers - Exercise 13.2 [Page 261]

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NCERT Mathematics [English] Class 7
Chapter 13 Exponents and Powers
Exercise 13.2 | Q 5.2 | Page 261

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