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X^2 4x 1=0

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Type your math problem... x^2-4x-1=0

Question

x^{2} - 4 x - 1 = 0

Solve the quadratic equation

Solve using the quadratic formula

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Solve by completing the square

Solve using the PQ formula

x_{1} = 2 - 5, x_{2} = 2 + 5

Alternative Form

x_{1} \approx - 0.236068, x_{2} \approx 4.236068

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