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Popular >

3x^2-9x-12=0

Solution

3 x^{2} - 9 x - 12 = 0

Solution

x = 4, x = - 1

Solution steps

3 x^{2} - 9 x - 12 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 9 ) \pm ( - 9 ) ^{2} - 4 \cdot 3 ( - 12 )}{2 \cdot 3}

(- 9)^{2} - 4 \cdot 3 (- 12) = 15

x_{1, 2} = \frac{- ( - 9 ) \pm 15}{2 \cdot 3}

Separate the solutions

x_{1} = \frac{- ( - 9 ) + 15}{2 \cdot 3}, x_{2} = \frac{- ( - 9 ) - 15}{2 \cdot 3}

x = \frac{- ( - 9 ) + 15}{2 \cdot 3} : 4

x = \frac{- ( - 9 ) - 15}{2 \cdot 3} : - 1

The solutions to the quadratic equation are:

x = 4, x = - 1

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Frequently Asked Questions (FAQ)

What are the solutions to the equation 3x^2-9x-12=0 ?
The solutions to the equation 3x^2-9x-12=0 are x=4,x=-1
Find the zeros of 3x^2-9x-12=0
The zeros of 3x^2-9x-12=0 are x=4,x=-1