1. x² - 4=
2. 36m²-100n²=
3. x²y²-4/9=(/-дробная черта)
4. 0,01с²-d⁸=
5. -1+49a⁴b⁸=
6. (3b-5)²-49=
7. a⁴-(a-7)²=
2. 36m²-100n²=
3. x²y²-4/9=(/-дробная черта)
4. 0,01с²-d⁸=
5. -1+49a⁴b⁸=
6. (3b-5)²-49=
7. a⁴-(a-7)²=
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