expand (3x-2)³ plz reply me fast......
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Answer:
(3x-2)^3
(3x−2) 3
= (3x)^{3} -3(3x)^{2} (2)+ 3(3x) (2^2)-2^3(3x) 3
−3(3x)
2
(2)+3(3x)(2
2
)−2
3
[ ∵ (a-b)^3=a^3-3a^2b+3ab^2-b^3(a−b)
3
=a
3
−3a
2
b+3ab
2
−b
3
]
= 27x^{3} -54x^2+ 36x-827x
3
−54x
2
+36x−8
∴ (3x-2)^3(3x−2)
3
= 27x^{3} -54x^2+ 36x-827x
3
−54x
2
+36x−8
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