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Popular >

x^2-24x-81=0

Solution

x^{2} - 24 x - 81 = 0

Solution

x = 27, x = - 3

Solution steps

x^{2} - 24 x - 81 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 24 ) \pm ( - 24 ) ^{2} - 4 \cdot 1 \cdot ( - 81 )}{2 \cdot 1}

(- 24)^{2} - 4 \cdot 1 \cdot (- 81) = 30

x_{1, 2} = \frac{- ( - 24 ) \pm 30}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- ( - 24 ) + 30}{2 \cdot 1}, x_{2} = \frac{- ( - 24 ) - 30}{2 \cdot 1}

x = \frac{- ( - 24 ) + 30}{2 \cdot 1} : 27

x = \frac{- ( - 24 ) - 30}{2 \cdot 1} : - 3

The solutions to the quadratic equation are:

x = 27, x = - 3

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Frequently Asked Questions (FAQ)

What are the solutions to the equation x^2-24x-81=0 ?
The solutions to the equation x^2-24x-81=0 are x=27,x=-3
Find the zeros of x^2-24x-81=0
The zeros of x^2-24x-81=0 are x=27,x=-3