wynik ma być 1 i 5/8
POMOCY DAJE NAJJJ
8a³-4a²+2 dla a=-¹/₄ 8 * (-¹/₄)³ - 4 * (-¹/₄)² + 2 8 * (-¹/₆₄) - 4 * (-¹/₁₆) + 2 -¹/₈ - ¹/₄ + 2 -¹/₈ - ²/₈ + 2 -³/₈ + 2 -³/₈ + ¹⁶/₈
¹³/₈
1⁵/₈
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8a³-4a²+2 dla a=-¹/₄
8 * (-¹/₄)³ - 4 * (-¹/₄)² + 2
8 * (-¹/₆₄) - 4 * (-¹/₁₆) + 2
-¹/₈ - ¹/₄ + 2
-¹/₈ - ²/₈ + 2
-³/₈ + 2
-³/₈ + ¹⁶/₈
¹³/₈
1⁵/₈