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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.
`(2m + 1/5)^3`
Use property to evaluate : 73 + 33 + (-10)3
Use property to evaluate : 383 + (-26)3 + (-12)3
If a ≠ 0 and `a - 1/a` = 4 ; find : `( a^3 - 1/a^3 )`
If X ≠ 0 and X + `1/"X"` = 2 ; then show that :
`x^2 + 1/x^2 = x^3 + 1/x^3 = x^4 + 1/x^4`
Find the cube of: 2a - 5b
If `9"a"^2 + (1)/(9"a"^2) = 23`; find the value of `27"a"^3 + (1)/(27"a"^3)`
If `x^2 + (1)/x^2 = 18`; find : `x^3 - (1)/x^3`
Simplify:
`("a" + 1/"a")^3 - ("a" - 1/"a")^3`
