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X^2 x 1 = 0

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

Question

x^{2} - 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} = \frac{1 - 5}{2}, x_{2} = \frac{1 + 5}{2}

Alternative Form

x_{1} \approx - 0.618034, x_{2} \approx 1.618034

Show Solution

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