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प्रश्न
Simplify:
(x + y)3 − (x − y)3
सोपे रूप द्या
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उत्तर
It is known that,
a3 − b3 = (a − b)(a2 + ab + b2)
(x + y)3 − (x − y)3
(x + y)3 − (x − y)3 = {(x + y) − (x − y)}{(x + y)2 + (x + y)(x − y) + (x − y)2}
= 2y(x2 + 2xy + y2 + x2 − y2 + x2 − 2xy + y2)
= 2y (3x2 + y2)
= 2y × 3x2 + 2y × y2
= 6x2y + 2y3
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Simplify:
\[\frac{8 x^3 - 27 y^3}{4 x^2 - 9 y^2}\]
Simplify:
\[\frac{m^2 - n^2}{\left( m + n \right)^2} \times \frac{m^2 + mn + n^2}{m^3 - n^3}\]
Factorise:
125y3 − 1
Factorise:
`16a^3 - 128/b^3`
Simplify:
(3a + 5b)3 − (3a − 5b)3
Simplify:
(3xy − 2ab)3 − (3xy + 2ab)3
Factorise: x3 - 8y3
Factorise: 27p3 - 125q3.
Factorise: 54p3 - 250q3.
Factorise the following:
27x3 – 8y3
