1) 3x²(x²-y²)
2) 16xy (x-3+12y)
3) 3b²(-25+10b²-1)
4) 2(x6-8y7)
Вот...........................
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1) 3x²(x²-y²)
2) 16xy (x-3+12y)
3) 3b²(-25+10b²-1)
4) 2(x6-8y7)
Вот...........................