What are the solutions to the equation y^2-9y-18=0 ?

The solutions to the equation y^2-9y-18=0 are y=(9+3sqrt(17))/2 ,y=(9-3sqrt(17))/2

Find the zeros of y^2-9y-18=0

The zeros of y^2-9y-18=0 are y=(9+3sqrt(17))/2 ,y=(9-3sqrt(17))/2

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y^{2} - 9 y - 18 = 0

y = \frac{9 + 3 17}{2}, y = \frac{9 - 3 17}{2}

Decimal Notation

y = 10.68465 \dots, y = - 1.68465 \dots

Solution steps

y^{2} - 9 y - 18 = 0

Solve with the quadratic formula

y_{1, 2} = \frac{- ( - 9 ) \pm ( - 9 ) ^{2} - 4 \cdot 1 \cdot ( - 18 )}{2 \cdot 1}

(- 9)^{2} - 4 \cdot 1 \cdot (- 18) = 317

y_{1, 2} = \frac{- ( - 9 ) \pm 3 17}{2 \cdot 1}

Separate the solutions

y_{1} = \frac{- ( - 9 ) + 3 17}{2 \cdot 1}, y_{2} = \frac{- ( - 9 ) - 3 17}{2 \cdot 1}

y = \frac{- ( - 9 ) + 3 17}{2 \cdot 1} : \frac{9 + 3 17}{2}

y = \frac{- ( - 9 ) - 3 17}{2 \cdot 1} : \frac{9 - 3 17}{2}

The solutions to the quadratic equation are:

y = \frac{9 + 3 17}{2}, y = \frac{9 - 3 17}{2}

x^{2} - 83 x + 169 = 0

40 = \frac{( 0.0826 ) ( 0.015 ) ( 200 ) ( x ) ^{2}}{( 0.1 ) ^{5}}

X^{2} - 4 = 32

x, ln (y) = \frac{x ^{2}}{2} + c

x^{2} + 20 x - 400 = 0

What are the solutions to the equation y^2-9y-18=0 ?
The solutions to the equation y^2-9y-18=0 are y=(9+3sqrt(17))/2 ,y=(9-3sqrt(17))/2
Find the zeros of y^2-9y-18=0
The zeros of y^2-9y-18=0 are y=(9+3sqrt(17))/2 ,y=(9-3sqrt(17))/2