pkay1
pkay1
20-06-2017
Mathematics
contestada
factor by grouping: 25(a-3)^3 - 4(a-3)
Respuesta :
Banabanana
Banabanana
20-06-2017
25(a-3)
³
- 4(a-3) = (a-3)(25(a-3)
²
-4) = (a-3)((5(a-3))
²-2²
) =
= (a-3)(5(a-3)-2)(5(a-3)+2) = (a-3)(5a-15-2)(5a-15+2) = (a-3)(5a-17)(5a-13)
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