August 2022 1 3 Report
Алгебра. Даю 16 б.
2. Упростите выражение:
1) a) (2a-b)(2a+b)+b2;
б) (x + 7)2- 10x;
2) a) (a -c)(a+c)-(a -2c)2;
б) 9x2-(c+3x)(c-3x);
г) 5b" - (a - 2b)";
б) (x+ 3)2 - (x-3)2;
b) (a + 3c)' + (b + 3c)(b - 3c);
г) (x-4y)' +(x+4y)";
д) (x-3)(х+ 3)-(x+8)(x-8);
e) (2a + 1)(2a - 1) + (a - 7)(a + 7).​
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