1. Сократите дробь 1)a²-b²/a²-b²
2.Упростите выражение
1)3x-5(2x+1)=3(3-2x)
2)(x-3)(2x+5)=9
3. Решите уравнение.
1) 4(1-5x)-9-3(6x-5)
2)(4x-8)(x-1)=0
4.Постройте график зависимости
y=2x-4
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