factorise125a³-175a²b+70ab²-8b³
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Step-by-step explanation:
125 a³ - 175 a²b + 70 ab² -8b³
= (5a)³ -(2b)³ - 5ab( 35a -14b)
= (5a -2b)(5a + 2b) - 35ab(5a - 2b)
= (5a - 2b) [ 5a + 2b - 35ab]
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