Ответ:
1)a³-64b³=(a-4b)(a²+4ab+16b²)
2)x³-8x³y³=(x-2xy)(x²+2x²y+4x²y²)
3)6a²+12a+6=6(a²+2a+1)=6(a+1)²
4)3ab+15b-3a-15=3b(a+5)-3(a+5)=3(a+5)(b-1)
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Ответ:
1)a³-64b³=(a-4b)(a²+4ab+16b²)
2)x³-8x³y³=(x-2xy)(x²+2x²y+4x²y²)
3)6a²+12a+6=6(a²+2a+1)=6(a+1)²
4)3ab+15b-3a-15=3b(a+5)-3(a+5)=3(a+5)(b-1)