12.Factorise i) 64x^3 -125
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Answer:
Step-by-step explanation:
Given that,
64x^3 -125
= (4x)^3 - 5^3, using, a^3 -b^3 =(a-b)(a^2 +ab +b^2)
= (4x -5)(16x^2 +20x +25)
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