What are the solutions to the equation 3x^2-21x-54=0 ?

The solutions to the equation 3x^2-21x-54=0 are x=9,x=-2

Find the zeros of 3x^2-21x-54=0

The zeros of 3x^2-21x-54=0 are x=9,x=-2

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3 x^{2} - 21 x - 54 = 0

x = 9, x = - 2

Solution steps

3 x^{2} - 21 x - 54 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 21 ) \pm ( - 21 ) ^{2} - 4 \cdot 3 ( - 54 )}{2 \cdot 3}

(- 21)^{2} - 4 \cdot 3 (- 54) = 33

x_{1, 2} = \frac{- ( - 21 ) \pm 33}{2 \cdot 3}

Separate the solutions

x_{1} = \frac{- ( - 21 ) + 33}{2 \cdot 3}, x_{2} = \frac{- ( - 21 ) - 33}{2 \cdot 3}

x = \frac{- ( - 21 ) + 33}{2 \cdot 3} : 9

x = \frac{- ( - 21 ) - 33}{2 \cdot 3} : - 2

The solutions to the quadratic equation are:

x = 9, x = - 2

(x + 3)^{2} = 14

- 9 x^{2} - 4 x - 2 = 0

x^{2} + (\frac{15}{17})^{2} = 1

80 (X + 6) - 80 X = 3 X (X + 6)

- 2 x^{2} - 16 x - 37

What are the solutions to the equation 3x^2-21x-54=0 ?
The solutions to the equation 3x^2-21x-54=0 are x=9,x=-2
Find the zeros of 3x^2-21x-54=0
The zeros of 3x^2-21x-54=0 are x=9,x=-2