(5x-8)^3-(3x-8)^3-6x(5x-8)(3x-8)
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Answer:
Given expression is (5x−8)
3
−(3x−8)
3
−6x(5x−8)(3x−8)
Let 5x−8=a,3x−8=b, then the given expression is
a
3
−b
3
−3(a−b)×a=(a−b)
3
⇒[(5x−8)−(3x−8)]
3
=[5x−3x−8+8]
3
⇒(2x
3
)=8x
3
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