Algebra Examples

$3 x^{3} + 6 x^{2} - 24 x = a x (x + b) (x + c)$

Step 1

Subtract $a x (x + b) (x + c)$ from both sides of the equation.

$3 x^{3} + 6 x^{2} - 24 x - a x (x + b) (x + c) = 0$

Step 2

Simplify each term.

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Step 2.1

Apply the distributive property.

$3 x^{3} + 6 x^{2} - 24 x + (- a x \cdot x - a x b) (x + c) = 0$

Step 2.2

Multiply $x$ by $x$ by adding the exponents.

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Step 2.2.1

Move $x$ .

$3 x^{3} + 6 x^{2} - 24 x + (- a (x \cdot x) - a x b) (x + c) = 0$

Step 2.2.2

Multiply $x$ by $x$ .

$3 x^{3} + 6 x^{2} - 24 x + (- a x^{2} - a x b) (x + c) = 0$

Step 2.3

Expand $(- a x^{2} - a x b) (x + c)$ using the FOIL Method.

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Step 2.3.1

Apply the distributive property.

$3 x^{3} + 6 x^{2} - 24 x - a x^{2} (x + c) - a x b (x + c) = 0$

Step 2.3.2

Apply the distributive property.

$3 x^{3} + 6 x^{2} - 24 x - a x^{2} x - a x^{2} c - a x b (x + c) = 0$

Step 2.3.3

Apply the distributive property.

$3 x^{3} + 6 x^{2} - 24 x - a x^{2} x - a x^{2} c - a x b x - a x b c = 0$

Step 2.4

Simplify each term.

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Step 2.4.1

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 2.4.1.1

Move $x$ .

$3 x^{3} + 6 x^{2} - 24 x - a (x \cdot x^{2}) - a x^{2} c - a x b x - a x b c = 0$

Step 2.4.1.2

Multiply $x$ by $x^{2}$ .

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Step 2.4.1.2.1

Raise $x$ to the power of $1$ .

$3 x^{3} + 6 x^{2} - 24 x - a (x^{1} x^{2}) - a x^{2} c - a x b x - a x b c = 0$

Step 2.4.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$3 x^{3} + 6 x^{2} - 24 x - a x^{1 + 2} - a x^{2} c - a x b x - a x b c = 0$

Step 2.4.1.3

Add $1$ and $2$ .

$3 x^{3} + 6 x^{2} - 24 x - a x^{3} - a x^{2} c - a x b x - a x b c = 0$

Step 2.4.2

Multiply $x$ by $x$ by adding the exponents.

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Step 2.4.2.1

Move $x$ .

$3 x^{3} + 6 x^{2} - 24 x - a x^{3} - a x^{2} c - a (x \cdot x) b - a x b c = 0$

Step 2.4.2.2

Multiply $x$ by $x$ .

$3 x^{3} + 6 x^{2} - 24 x - a x^{3} - a x^{2} c - a x^{2} b - a x b c = 0$

Step 3

Factor $x$ out of $3 x^{3} + 6 x^{2} - 24 x - a x^{3} - a x^{2} c - a x^{2} b - a x b c$ .

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Step 3.1

Factor $x$ out of $3 x^{3}$ .

$x (3 x^{2}) + 6 x^{2} - 24 x - a x^{3} - a x^{2} c - a x^{2} b - a x b c = 0$

Step 3.2

Factor $x$ out of $6 x^{2}$ .

$x (3 x^{2}) + x (6 x) - 24 x - a x^{3} - a x^{2} c - a x^{2} b - a x b c = 0$

Step 3.3

Factor $x$ out of $- 24 x$ .

$x (3 x^{2}) + x (6 x) + x \cdot - 24 - a x^{3} - a x^{2} c - a x^{2} b - a x b c = 0$

Step 3.4

Factor $x$ out of $- a x^{3}$ .

$x (3 x^{2}) + x (6 x) + x \cdot - 24 + x (- a x^{2}) - a x^{2} c - a x^{2} b - a x b c = 0$

Step 3.5

Factor $x$ out of $- a x^{2} c$ .

$x (3 x^{2}) + x (6 x) + x \cdot - 24 + x (- a x^{2}) + x (- a x c) - a x^{2} b - a x b c = 0$

Step 3.6

Factor $x$ out of $- a x^{2} b$ .

$x (3 x^{2}) + x (6 x) + x \cdot - 24 + x (- a x^{2}) + x (- a x c) + x (- a x b) - a x b c = 0$

Step 3.7

Factor $x$ out of $- a x b c$ .

$x (3 x^{2}) + x (6 x) + x \cdot - 24 + x (- a x^{2}) + x (- a x c) + x (- a x b) + x (- a b c) = 0$

Step 3.8

Factor $x$ out of $x (3 x^{2}) + x (6 x)$ .

$x (3 x^{2} + 6 x) + x \cdot - 24 + x (- a x^{2}) + x (- a x c) + x (- a x b) + x (- a b c) = 0$

Step 3.9

Factor $x$ out of $x (3 x^{2} + 6 x) + x \cdot - 24$ .

$x (3 x^{2} + 6 x - 24) + x (- a x^{2}) + x (- a x c) + x (- a x b) + x (- a b c) = 0$

Step 3.10

Factor $x$ out of $x (3 x^{2} + 6 x - 24) + x (- a x^{2})$ .

$x (3 x^{2} + 6 x - 24 - a x^{2}) + x (- a x c) + x (- a x b) + x (- a b c) = 0$

Step 3.11

Factor $x$ out of $x (3 x^{2} + 6 x - 24 - a x^{2}) + x (- a x c)$ .

$x (3 x^{2} + 6 x - 24 - a x^{2} - a x c) + x (- a x b) + x (- a b c) = 0$

Step 3.12

Factor $x$ out of $x (3 x^{2} + 6 x - 24 - a x^{2} - a x c) + x (- a x b)$ .

$x (3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b) + x (- a b c) = 0$

Step 3.13

Factor $x$ out of $x (3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b) + x (- a b c)$ .

$x (3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c) = 0$

Step 4

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$x = 0$

$3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c = 0$

Step 5

Set $x$ equal to $0$ .

$x = 0$

Step 6

Set $3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c$ equal to $0$ and solve for $x$ .

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Step 6.1

Set $3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c$ equal to $0$ .

$3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c = 0$

Step 6.2

Solve $3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c = 0$ for $x$ .

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Step 6.2.1

Use the quadratic formula to find the solutions.

$\frac{- b \pm \sqrt{b^{2} - 4 (a c)}}{2 a}$

Step 6.2.2

Substitute the values $a = 3 - a$ , $b = 6 - a c - a b$ , and $c = - 24 - a b c$ into the quadratic formula and solve for $x$ .

$\frac{- (6 - a c - a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot ((3 - a) \cdot (- 24 - a b c))}}{2 (3 - a)}$

Step 6.2.3

Simplify the numerator.

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Step 6.2.3.1

Apply the distributive property.

$x = \frac{- 1 \cdot 6 - (- a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.2

Simplify.

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Step 6.2.3.2.1

Multiply $- 1$ by $6$ .

$x = \frac{- 6 - (- a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.2.2

Multiply $- (- a c)$ .

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Step 6.2.3.2.2.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + 1 (a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.2.2.2

Multiply $a$ by $1$ .

$x = \frac{- 6 + a c - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.2.3

Multiply $- (- a b)$ .

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Step 6.2.3.2.3.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + 1 (a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.2.3.2

Multiply $a$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.3

Rewrite ${(6 - a c - a b)}^{2}$ as $(6 - a c - a b) (6 - a c - a b)$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{(6 - a c - a b) (6 - a c - a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.4

Expand $(6 - a c - a b) (6 - a c - a b)$ by multiplying each term in the first expression by each term in the second expression.

$x = \frac{- 6 + a c + a b \pm \sqrt{6 \cdot 6 + 6 (- a c) + 6 (- a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5

Simplify each term.

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Step 6.2.3.5.1

Multiply $6$ by $6$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 + 6 (- a c) + 6 (- a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.2

Multiply $- 1$ by $6$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 (a c) + 6 (- a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.3

Multiply $- 1$ by $6$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 (a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.4

Multiply $6$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.5

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.3.5.5.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a \cdot a c (- 1 c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.5.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a^{2} c (- 1 c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.6

Multiply $c$ by $c$ by adding the exponents.

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Step 6.2.3.5.6.1

Move $c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a^{2} (c \cdot c) \cdot - 1 - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.6.2

Multiply $c$ by $c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a^{2} c^{2} \cdot - 1 - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.7

Multiply $- a^{2} c^{2} \cdot - 1$ .

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Step 6.2.3.5.7.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + 1 a^{2} c^{2} - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.7.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.8

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.3.5.8.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a \cdot a c (- 1 b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.8.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a^{2} c (- 1 b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.9

Rewrite $- 1 b$ as $- b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a^{2} c (- b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.10

Multiply $- a^{2} c (- b)$ .

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Step 6.2.3.5.10.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + 1 a^{2} c b - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.10.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.11

Multiply $6$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.12

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.3.5.12.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a \cdot a b (- 1 c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.12.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a^{2} b (- 1 c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.13

Rewrite $- 1 c$ as $- c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a^{2} b (- c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.14

Multiply $- a^{2} b (- c)$ .

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Step 6.2.3.5.14.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + 1 a^{2} b c - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.14.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.15

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.3.5.15.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a \cdot a b (- 1 b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.15.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} b (- 1 b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.16

Multiply $b$ by $b$ by adding the exponents.

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Step 6.2.3.5.16.1

Move $b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} (b \cdot b) \cdot - 1 - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.16.2

Multiply $b$ by $b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} b^{2} \cdot - 1 - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.17

Multiply $- a^{2} b^{2} \cdot - 1$ .

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Step 6.2.3.5.17.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + 1 a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.5.17.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.6

Subtract $6 a c$ from $- 6 a c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 6 a b + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.7

Subtract $6 a b$ from $- 6 a b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + a^{2} c b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.8

Add $a^{2} c b$ and $a^{2} b c$ .

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Step 6.2.3.8.1

Move $c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + a^{2} b c + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.8.2

Add $a^{2} b c$ and $a^{2} b c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.9

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 4 \cdot 3 - 4 (- a)) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.10

Multiply $- 4$ by $3$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 12 - 4 (- a)) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.11

Multiply $- 1$ by $- 4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 12 + 4 a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.12

Expand $(- 12 + 4 a) (- 24 - a b c)$ using the FOIL Method.

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Step 6.2.3.12.1

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 (- 24 - a b c) + 4 a (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.12.2

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 \cdot - 24 - 12 (- a b c) + 4 a (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.3.12.3

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 \cdot - 24 - 12 (- a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.3.13

Simplify each term.

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Step 6.2.3.13.1

Multiply $- 12$ by $- 24$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 - 12 (- a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.3.13.2

Multiply $- 1$ by $- 12$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 (a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.3.13.3

Multiply $- 24$ by $4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.3.13.4

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.3.13.4.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 (a \cdot a) (- 1 b c)}}{2 (3 - a)}$

Step 6.2.3.13.4.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a^{2} (- 1 b c)}}{2 (3 - a)}$

Step 6.2.3.13.5

Rewrite $- 1 b$ as $- b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a^{2} (- b c)}}{2 (3 - a)}$

Step 6.2.3.13.6

Multiply $- 1$ by $4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a - 4 a^{2} b c}}{2 (3 - a)}$

Step 6.2.3.14

Add $36$ and $288$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{- 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a - 4 a^{2} b c}}{2 (3 - a)}$

Step 6.2.3.15

Subtract $4 a^{2} b c$ from $2 a^{2} b c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4

Simplify the expression to solve for the $+$ portion of the $\pm$ .

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Step 6.2.4.1

Change the $\pm$ to $+$ .

$x = \frac{- 6 + a c + a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.2

Rewrite $- 6$ as $- 1 (6)$ .

$x = \frac{- 1 \cdot 6 + a c + a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.3

Factor $- 1$ out of $a c$ .

$x = \frac{- 1 \cdot 6 - (- a c) + a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.4

Factor $- 1$ out of $- 1 (6) - (- a c)$ .

$x = \frac{- 1 (6 - a c) + a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.5

Factor $- 1$ out of $a b$ .

$x = \frac{- 1 (6 - a c) - (- a b) + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.6

Factor $- 1$ out of $- 1 (6 - a c) - (- a b)$ .

$x = \frac{- 1 (6 - a c - a b) + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.4.7

Factor $- 1$ out of $\sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}$ .

$x = \frac{- 1 (6 - a c - a b) - 1 (- \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})}{2 (3 - a)}$

Step 6.2.4.8

Factor $- 1$ out of $- 1 (6 - a c - a b) - 1 (- \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})$ .

$x = \frac{- 1 (6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})}{2 (3 - a)}$

Step 6.2.4.9

Move the negative in front of the fraction.

$x = - \frac{6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5

Simplify the expression to solve for the $-$ portion of the $\pm$ .

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Step 6.2.5.1

Simplify the numerator.

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Step 6.2.5.1.1

Apply the distributive property.

$x = \frac{- 1 \cdot 6 - (- a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.2

Simplify.

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Step 6.2.5.1.2.1

Multiply $- 1$ by $6$ .

$x = \frac{- 6 - (- a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.2.2

Multiply $- (- a c)$ .

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Step 6.2.5.1.2.2.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + 1 (a c) - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.2.2.2

Multiply $a$ by $1$ .

$x = \frac{- 6 + a c - (- a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.2.3

Multiply $- (- a b)$ .

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Step 6.2.5.1.2.3.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + 1 (a b) \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.2.3.2

Multiply $a$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{{(6 - a c - a b)}^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.3

Rewrite ${(6 - a c - a b)}^{2}$ as $(6 - a c - a b) (6 - a c - a b)$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{(6 - a c - a b) (6 - a c - a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.4

Expand $(6 - a c - a b) (6 - a c - a b)$ by multiplying each term in the first expression by each term in the second expression.

Step 6.2.5.1.5

Simplify each term.

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Step 6.2.5.1.5.1

Multiply $6$ by $6$ .

Step 6.2.5.1.5.2

Multiply $- 1$ by $6$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 (a c) + 6 (- a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.3

Multiply $- 1$ by $6$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 (a b) - a c \cdot 6 - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.4

Multiply $6$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a c (- a c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.5

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.5.1.5.5.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a \cdot a c (- 1 c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.5.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a^{2} c (- 1 c) - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.6

Multiply $c$ by $c$ by adding the exponents.

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Step 6.2.5.1.5.6.1

Move $c$ .

Step 6.2.5.1.5.6.2

Multiply $c$ by $c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c - a^{2} c^{2} \cdot - 1 - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.7

Multiply $- a^{2} c^{2} \cdot - 1$ .

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Step 6.2.5.1.5.7.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + 1 a^{2} c^{2} - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.7.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a c (- a b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.8

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.5.1.5.8.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a \cdot a c (- 1 b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.8.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a^{2} c (- 1 b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.9

Rewrite $- 1 b$ as $- b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} - a^{2} c (- b) - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.10

Multiply $- a^{2} c (- b)$ .

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Step 6.2.5.1.5.10.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + 1 a^{2} c b - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.10.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - a b \cdot 6 - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.11

Multiply $6$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a b (- a c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.12

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.5.1.5.12.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a \cdot a b (- 1 c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.12.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a^{2} b (- 1 c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.13

Rewrite $- 1 c$ as $- c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b - a^{2} b (- c) - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.14

Multiply $- a^{2} b (- c)$ .

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Step 6.2.5.1.5.14.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + 1 a^{2} b c - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.14.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a b (- a b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.15

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.5.1.5.15.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a \cdot a b (- 1 b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.15.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} b (- 1 b) - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.16

Multiply $b$ by $b$ by adding the exponents.

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Step 6.2.5.1.5.16.1

Move $b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} (b \cdot b) \cdot - 1 - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.16.2

Multiply $b$ by $b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c - a^{2} b^{2} \cdot - 1 - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.17

Multiply $- a^{2} b^{2} \cdot - 1$ .

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Step 6.2.5.1.5.17.1

Multiply $- 1$ by $- 1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + 1 a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.5.17.2

Multiply $a^{2}$ by $1$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 6 a c - 6 a b - 6 a c + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.6

Subtract $6 a c$ from $- 6 a c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 6 a b + a^{2} c^{2} + a^{2} c b - 6 a b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.7

Subtract $6 a b$ from $- 6 a b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + a^{2} c b + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.8

Add $a^{2} c b$ and $a^{2} b c$ .

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Step 6.2.5.1.8.1

Move $c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + a^{2} b c + a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.8.2

Add $a^{2} b c$ and $a^{2} b c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 4 \cdot (3 - a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.9

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 4 \cdot 3 - 4 (- a)) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.10

Multiply $- 4$ by $3$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 12 - 4 (- a)) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.11

Multiply $- 1$ by $- 4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + (- 12 + 4 a) \cdot (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.12

Expand $(- 12 + 4 a) (- 24 - a b c)$ using the FOIL Method.

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Step 6.2.5.1.12.1

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 (- 24 - a b c) + 4 a (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.12.2

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 \cdot - 24 - 12 (- a b c) + 4 a (- 24 - a b c)}}{2 (3 - a)}$

Step 6.2.5.1.12.3

Apply the distributive property.

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} - 12 \cdot - 24 - 12 (- a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.5.1.13

Simplify each term.

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Step 6.2.5.1.13.1

Multiply $- 12$ by $- 24$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 - 12 (- a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.2

Multiply $- 1$ by $- 12$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 (a b c) + 4 a \cdot - 24 + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.3

Multiply $- 24$ by $4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a (- a b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.4

Multiply $a$ by $a$ by adding the exponents.

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Step 6.2.5.1.13.4.1

Move $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 (a \cdot a) (- 1 b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.4.2

Multiply $a$ by $a$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a^{2} (- 1 b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.5

Rewrite $- 1 b$ as $- b$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a + 4 a^{2} (- b c)}}{2 (3 - a)}$

Step 6.2.5.1.13.6

Multiply $- 1$ by $4$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{36 - 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 288 + 12 a b c - 96 a - 4 a^{2} b c}}{2 (3 - a)}$

Step 6.2.5.1.14

Add $36$ and $288$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{- 12 a c - 12 a b + a^{2} c^{2} + 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a - 4 a^{2} b c}}{2 (3 - a)}$

Step 6.2.5.1.15

Subtract $4 a^{2} b c$ from $2 a^{2} b c$ .

$x = \frac{- 6 + a c + a b \pm \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.2

Change the $\pm$ to $-$ .

$x = \frac{- 6 + a c + a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.3

Rewrite $- 6$ as $- 1 (6)$ .

$x = \frac{- 1 \cdot 6 + a c + a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.4

Factor $- 1$ out of $a c$ .

$x = \frac{- 1 \cdot 6 - (- a c) + a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.5

Factor $- 1$ out of $- 1 (6) - (- a c)$ .

$x = \frac{- 1 (6 - a c) + a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.6

Factor $- 1$ out of $a b$ .

$x = \frac{- 1 (6 - a c) - (- a b) - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.7

Factor $- 1$ out of $- 1 (6 - a c) - (- a b)$ .

$x = \frac{- 1 (6 - a c - a b) - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.5.8

Factor $- 1$ out of $- \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}$ .

$x = \frac{- 1 (6 - a c - a b) - (\sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})}{2 (3 - a)}$

Step 6.2.5.9

Factor $- 1$ out of $- 1 (6 - a c - a b) - (\sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})$ .

$x = \frac{- 1 (6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a})}{2 (3 - a)}$

Step 6.2.5.10

Move the negative in front of the fraction.

$x = - \frac{6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 6.2.6

The final answer is the combination of both solutions.

$x = - \frac{6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

Step 7

The final solution is all the values that make $x (3 x^{2} + 6 x - 24 - a x^{2} - a x c - a x b - a b c) = 0$ true.

$x = 0$

$x = - \frac{6 - a c - a b - \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$

$x = - \frac{6 - a c - a b + \sqrt{- 12 a c - 12 a b + a^{2} c^{2} - 2 a^{2} b c + a^{2} b^{2} + 324 + 12 a b c - 96 a}}{2 (3 - a)}$