Solve -3(x - 14) 9x = 6x^42

If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses

- 27 x^{2} + 378 x

- 27 x^{2} + 378 x = 12 x^{4}

Move the expression to the left side

- 27 x^{2} + 378 x - 12 x^{4} = 0

Factor the expression

- 3 x (9 x - 126 + 4 x^{3}) = 0

Divide both sides

x (9 x - 126 + 4 x^{3}) = 0

Separate the equation into 2 possible cases

x = 0 9 x - 126 + 4 x^{3} = 0

Solve the equation

x = 0 x \approx 2.921182

Solution

x_{1} = 0, x_{2} \approx 2.921182

Show Solution

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