June 2023 1 2 Report
12. Упростите.
1)(x-2)²-(x + 2) (x-2)
3) (2x-5y) (2x + 5y)-(2r-Sy)²
5) (5a-7) (5a + 7)-25 (a-2)²
7) (2x + 4) (2x-4)-(2x+5) (2x-5)
9) (a + b) (a-b)-(a + b)²+(a - b)
2) (x+3)²-(x-3) (x+3)
4) (-a-b) (a + b)-(a + b)(a - b)
6) (-3a-1)²-(3a-1) (3a + 1)
8) (x+4) (x + 2) - (x-3) (x+3)
10) (a-c) (a + c)-(-b+c)(-b-c)


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