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प्रश्न
Expand.
(7x + 8y)3
बेरीज
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उत्तर
(7x + 8y)3
= `(7x)^3 + 3 xx (7x)^2 xx (8y) + 3 xx (7x) xx (8y)^2 + (8y)^3` …[∵ (a + b)3 = a3 + 3a2b + 3ab2 + b3]
= `343x^3 + 3(49x^2)(8y) + 3(7x)(64y^2) + 512y^3`
= `343x^3 + 1176x^2y + 1344xy^2 + 512y^3`
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Expand.
(52)3
Expand.
`(x + 1/x)^3`
Use property to evaluate : 93 - 53 - 43
If `"r" - (1)/"r" = 4`; find : `"r"^3 - (1)/"r"^3`
If a + b + c = 0; then show that a3 + b3 + c3 = 3abc.
If a + 2b + c = 0; then show that a3 + 8b3 + c3 = 6abc
If x + 2y = 5, then show that x3 + 8y3 + 30xy = 125.
Expand: (3x + 4y)3.
Expand (52)3
(p + q)(p2 – pq + q2) is equal to _____________
