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Вправа № 725

3) х 5 – 36х 3 = 0, х 3 (х 2 – 36) = 0, х 3 (х – 6)(х + 6) = 0, х 3 =0, або х – 6 = 0, або х +6 = 0, х = 0, або х =6, або х =- 6. Відповідь. -6;0;6. 5)х 3 – 10х 2 +25х = 0, х(х 2 – 10х +25) =0, х(х – 5) 2 = 0, х = 0, або х – 5 = 0, х = 0, або х = 5. Відповідь. 0; 5.

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Вправа № 725

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  1. 3) х5 – 36х3 = 0, х3(х2 – 36) = 0, х3(х – 6)(х + 6) = 0, х3 =0, або х – 6 = 0, або х +6 = 0, х = 0, або х =6, або х =- 6. Відповідь. -6;0;6. 5)х3 – 10х2 +25х = 0, х(х2 – 10х +25) =0, х(х – 5)2 = 0, х = 0, або х – 5 = 0, х = 0, або х = 5. Відповідь. 0; 5. Вправа №725

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