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Expand. (2m − 5)3 - Marathi (Second Language) [मराठी (द्वितीय भाषा)]

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प्रश्न

Expand.

(2m − 5)3

योग

उत्तर

It is known that,

(a − b)3 = a3 − 3a2b + 3ab2 − b3

(2m − 5)3

= `(2m)^3 - 3 xx (2m)^2 xx (5) + 3 xx (2m) (5)^2 - (5)^3`

= `8m^3 - 3 xx 4m^2 xx 5 + 3 xx 2m xx 25 - 125`

= `8m^3 - 60m^2 + 150m - 125`

`(2m − 5)^3 =  8m^3 - 60m^2 + 150m - 125`

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Expansion formulae - Practice Set 5.3 [पृष्ठ २७]

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बालभारती Mathematics [English] 8 Standard Maharashtra State Board
अध्याय 5 Expansion formulae
Practice Set 5.3 | Q 1.1 | पृष्ठ २७
बालभारती Integrated 8 Standard Part 1 [English Medium] Maharashtra State Board
अध्याय 3.5 Expansion formulae
Practice Set 5.3 | Q 1. (1) | पृष्ठ ६६
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