October 2021 1 19 Report


2. Разложить на множители:

а) b2 – 16; в) 49a2b4 – 100c4;

б) a2 + 6a + 9; г) (x + 1)2 + (x – 1)2.

3. Упростить выражение:

(a – 3)2 – 3a(a – 2).
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