^2, ^3 — это степени:
1) a^3 - 2a^2 + 4a + 2a^2 - 4a + 8 = a^3 + 8
2) 1 + x^2 + x^4 - x^2 - x^4 - x^6 = 1 - x^6
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^2, ^3 — это степени:
1) a^3 - 2a^2 + 4a + 2a^2 - 4a + 8 = a^3 + 8
2) 1 + x^2 + x^4 - x^2 - x^4 - x^6 = 1 - x^6