Solve u - 4u^4 = 7

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Type your math problem... u - 4u^4 = 7

Question

Solve the equation(The real numbers system)

u \in / R

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u_{1} \approx 0.813972 + 0.765354 i, u_{2} \approx 0.813972 - 0.765354 i, u_{3} \approx - 0.813972 + 0.859846 i, u_{4} \approx - 0.813972 - 0.859846 i

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