Solve x^2-18x=-2 - ScanMath

Evaluate

x^{2} - 18 x = - 2

Move the expression to the left side

x^{2} - 18 x + 2 = 0

Substitute a= 1,b= - 18 and c= 2 into the quadratic formula x = \frac{- b \pm b ^{2} - 4 a c}{2 a}

x = \frac{18 \pm ( - 18 ) ^{2} - 4 \times 2}{2}

Simplify the expression

More Steps

x = \frac{18 \pm 316}{2}

Simplify the radical expression

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x = \frac{18 \pm 2 79}{2}

Separate the equation into 2 possible cases

x = \frac{18 + 2 79}{2} x = \frac{18 - 2 79}{2}

Simplify the expression

More Steps

x = 9 + 79 x = \frac{18 - 2 79}{2}

Simplify the expression

More Steps

x = 9 + 79 x = 9 - 79

Solution

x_{1} = 9 - 79, x_{2} = 9 + 79

Alternative Form

x_{1} \approx 0.111806, x_{2} \approx 17.888194

Solve the quadratic equation