Разложите на множители многочлены 30 баллов
1) 5а(3а-8) - 3b(3a-8) + 9ab(3a-8) - (3a-8)
2) 7y(7x-y) + x(7x-y) - 7xy (7x-y) + (7x-y)
1) 5а(3а-8) - 3b(3a-8) + 9ab(3a-8) - (3a-8)
2) 7y(7x-y) + x(7x-y) - 7xy (7x-y) + (7x-y)
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5а(3а-8) - 3b(3a-8) + 9ab(3a-8) - (3a-8)= (3а-8)(5а - 3b + 9ab - 1)
7y(7x-y) + x(7x-y) - 7xy (7x-y) + (7x-y)=(7x-y)(7y + x - 7xy + 1)