А) 3(8a – 4) + 6a + (3 – a)(a + 13);
б) 11с + 2(8 – с)2 – 6c – 2c2;
в) 2(у – 1)2 – 2y +12;
г) (n + 4)2 – 8n +16n2.
284
490
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