What are the solutions to the equation -x^2+20.5x-100=0 ?

The solutions to the equation -x^2+20.5x-100=0 are x=8,x= 25/2

Find the zeros of -x^2+20.5x-100=0

The zeros of -x^2+20.5x-100=0 are x=8,x= 25/2

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- x^{2} + 20.5 x - 100 = 0

x = 8, x = \frac{25}{2}

Decimal Notation

x = 8, x = 12.5

Solution steps

- x^{2} + 20.5 x - 100 = 0

Multiply both sides by

10

- 10 x^{2} + 205 x - 1000 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 205 \pm 20 5 ^{2} - 4 ( - 10 ) ( - 1000 )}{2 ( - 10 )}

20 5^{2} - 4 (- 10) (- 1000) = 45

x_{1, 2} = \frac{- 205 \pm 45}{2 ( - 10 )}

Separate the solutions

x_{1} = \frac{- 205 + 45}{2 ( - 10 )}, x_{2} = \frac{- 205 - 45}{2 ( - 10 )}

x = \frac{- 205 + 45}{2 ( - 10 )} : 8

x = \frac{- 205 - 45}{2 ( - 10 )} : \frac{25}{2}

The solutions to the quadratic equation are:

x = 8, x = \frac{25}{2}

x^{2} - (32 + 2 i) \cdot x + 6 2 i = 0

65 \cdot x^{2} - 9 x - 35 = 0

a^{2} \cdot x^{2} - b^{2} = 0

x, x^{2} + y^{2} + z^{2} - 4 x + 6 y + 2 z - 2 = 0

x, x^{2} y + 2 x y = 5 y^{3}

What are the solutions to the equation -x^2+20.5x-100=0 ?
The solutions to the equation -x^2+20.5x-100=0 are x=8,x= 25/2
Find the zeros of -x^2+20.5x-100=0
The zeros of -x^2+20.5x-100=0 are x=8,x= 25/2