Solve x^2-6x-9=0 - ScanMath

Evaluate

x^{2} - 6 x - 9 = 0

Substitute a= 1,b= - 6 and c= - 9 into the quadratic formula x = \frac{- b \pm b ^{2} - 4 a c}{2 a}

x = \frac{6 \pm ( - 6 ) ^{2} - 4 ( - 9 )}{2}

Simplify the expression

More Steps

x = \frac{6 \pm 72}{2}

Simplify the radical expression

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x = \frac{6 \pm 6 2}{2}

Separate the equation into 2 possible cases

x = \frac{6 + 6 2}{2} x = \frac{6 - 6 2}{2}

Simplify the expression

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x = 3 + 32 x = \frac{6 - 6 2}{2}

Simplify the expression

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x = 3 + 32 x = 3 - 32

Solution

x_{1} = 3 - 32, x_{2} = 3 + 32

Alternative Form

x_{1} \approx - 1.242641, x_{2} \approx 7.242641

Solve the quadratic equation