Maharashtra State BoardSSC (English Medium) 8th Standard
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Expand: (3x + 4y)3. - Mathematics

Sum

Expand: (3x + 4y)3.

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Solution

(3x + 4y)3

`= (3x)^3 + 3(3x)^2(4y) + 3(3x)(4y)^2 + (4y)^3`.

`= 27x^3 + 3 xx 9x^2 xx 4y + 3 xx 3x xx 16y^2 + 64y^3`.

`= 27x^3 + 108x^2y + 144xy^2 + 64y^3`

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