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Stella [2.4K]
3 years ago
5

Factor by grouping: 25(a-3)^3 - 4(a-3)

Mathematics
1 answer:
stira [4]3 years ago
6 0
<span>25(a-3)</span>³<span> - 4(a-3) = (a-3)(25(a-3)</span>²<span>-4) = (a-3)((5(a-3))</span>²-2²<span>) = 
= (a-3)(5(a-3)-2)(5(a-3)+2) = (a-3)(5a-15-2)(5a-15+2) = (a-3)(5a-17)(5a-13)</span>
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