What are the solutions to the equation 3x^2-18x=21 ?

The solutions to the equation 3x^2-18x=21 are x=7,x=-1

Find the zeros of 3x^2-18x=21

The zeros of 3x^2-18x=21 are x=7,x=-1

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3 x^{2} - 18 x = 21

x = 7, x = - 1

Solution steps

3 x^{2} - 18 x = 21

Move

21

to the left side

3 x^{2} - 18 x - 21 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 18 ) \pm ( - 18 ) ^{2} - 4 \cdot 3 ( - 21 )}{2 \cdot 3}

(- 18)^{2} - 4 \cdot 3 (- 21) = 24

x_{1, 2} = \frac{- ( - 18 ) \pm 24}{2 \cdot 3}

Separate the solutions

x_{1} = \frac{- ( - 18 ) + 24}{2 \cdot 3}, x_{2} = \frac{- ( - 18 ) - 24}{2 \cdot 3}

x = \frac{- ( - 18 ) + 24}{2 \cdot 3} : 7

x = \frac{- ( - 18 ) - 24}{2 \cdot 3} : - 1

The solutions to the quadratic equation are:

x = 7, x = - 1

\frac{125}{9}

16 x^{2} + 48 x y + 36 y^{2}

lo g_{64} (8) = w

x^{2} - 20 x + 100 = 0

6 x - 14

What are the solutions to the equation 3x^2-18x=21 ?
The solutions to the equation 3x^2-18x=21 are x=7,x=-1
Find the zeros of 3x^2-18x=21
The zeros of 3x^2-18x=21 are x=7,x=-1