1.Выполните действия:
а) (a – 2b)2
б) (7x – 1)2
в) (5a +2b4)2
г) (x–12)(x+ 12)
д) ( 4n3 -7)(4n3+7)
2.Упростите:
а) 18c2 – 2(3c – 1)2
б) (2a +3)(2a –3) – 2a(4 – 6a)
в) (2x + 3)(3 –2x) – (2x –5)2 –10x
3.Решите уравнения:
а) x (x–2)(x+1) = x2 (x –1)
б) (2y –1)2 – 4(y–2)(y+2) = –5y +18

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