Упростить выражение:
1) а) 8(бу + 3)2 + 9 (3y - 1)2; б) (2x – 5)2 – 2(7x – 1);
2) а) (4у2 + 3)2+(9 – 4у?)2 – 2(4y? + 3) (4y? – 9);
б) (а?- баb + 9ь?)(a2 + баb +9b2) - (а? – 9ь?)2;
3) а) (х + 3b)(х – 35) - (х + 2b) (x? — 2bx + 4b2);
б) (х+1)(x2+x 1) - (x-1)(x2-x-1).​
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