SSC (English Medium) Class 8Maharashtra State Board
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Expand ( 1 − 1 a ) 3 - SSC (English Medium) Class 8 - Mathematics

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Question

Expand

`(1 - 1/a)^3`

Solution

`(1 - 1/a)^3`

= `(1)^3 - (1/a)^3 - 3 xx (1)^2 xx 1/a + 3 xx 1 xx (1/a)^2`

= `1 - 1/a^3 - 3/a + 3/a^2`

  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 5: Expansion formulae
Practice Set 5.3 | Q: 1.7 | Page no. 27
Solution Expand ( 1 − 1 a ) 3 Concept: Expansion of (A - B)3.
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