What are the solutions to the equation X^2-7X-18=0 ?

The solutions to the equation X^2-7X-18=0 are X=9,X=-2

Find the zeros of X^2-7X-18=0

The zeros of X^2-7X-18=0 are X=9,X=-2

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X^{2} - 7 X - 18 = 0

X = 9, X = - 2

Solution steps

X^{2} - 7 X - 18 = 0

Solve with the quadratic formula

X_{1, 2} = \frac{- ( - 7 ) \pm ( - 7 ) ^{2} - 4 \cdot 1 \cdot ( - 18 )}{2 \cdot 1}

(- 7)^{2} - 4 \cdot 1 \cdot (- 18) = 11

X_{1, 2} = \frac{- ( - 7 ) \pm 11}{2 \cdot 1}

Separate the solutions

X_{1} = \frac{- ( - 7 ) + 11}{2 \cdot 1}, X_{2} = \frac{- ( - 7 ) - 11}{2 \cdot 1}

X = \frac{- ( - 7 ) + 11}{2 \cdot 1} : 9

X = \frac{- ( - 7 ) - 11}{2 \cdot 1} : - 2

The solutions to the quadratic equation are:

X = 9, X = - 2

x (1 - x) + (- 0.02) - 0.1 x = 0

3 x^{2} + (0 + 1) x - 2 = 0

2 z^{2} - 11 = - 4

5 k^{2} - 17 k + 13 = 0

2 x^{2} + 3 = 5

What are the solutions to the equation X^2-7X-18=0 ?
The solutions to the equation X^2-7X-18=0 are X=9,X=-2
Find the zeros of X^2-7X-18=0
The zeros of X^2-7X-18=0 are X=9,X=-2