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fenix001 [56]
3 years ago
7

Factor the polynomial 64x^3-125

Mathematics
1 answer:
kobusy [5.1K]3 years ago
7 0
64 x^{3} -125

= (4x)^{3} - 5^{3} ------> because, (4x)^{3} is same as 64x³ and 
                                                5^{3} is same as 125

Using the formula: a^{3}- b^{3}  =(a-b)(a ^{2} +ab+b ^{2} ), we get, 

= (4x -5)((4x)^{2} +4x*5+ 5^{2} )

= (4x -5)(16 x^{2} +20x+25)   ------>that's your answer!!
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