Solve -5x-4x^3x 10x -4x

Question

Simplify the expression

- 9 x - 40 x^{5}

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- x (9 + 40 x^{4})

Show Solution

x_{1} = - \frac{4 9000}{20} - \frac{4 9000}{20} i, x_{2} = \frac{4 9000}{20} + \frac{4 9000}{20} i, x_{3} = 0

Alternative Form

x_{1} \approx - 0.487002 - 0.487002 i, x_{2} \approx 0.487002 + 0.487002 i, x_{3} = 0

Evaluate

- 5 x - 4 x^{3} \times x \times 10 x - 4 x

To find the roots of the expression,set the expression equal to 0

- 5 x - 4 x^{3} \times x \times 10 x - 4 x = 0

Multiply

More Steps

- 5 x - 40 x^{5} - 4 x = 0

Subtract the terms

More Steps

- 9 x - 40 x^{5} = 0

Factor the expression

- x (9 + 40 x^{4}) = 0

Divide both sides

x (9 + 40 x^{4}) = 0

Separate the equation into 2 possible cases

x = 0 9 + 40 x^{4} = 0

Solve the equation

More Steps

x = 0 x = \frac{4 9000}{20} + \frac{4 9000}{20} i x = - \frac{4 9000}{20} - \frac{4 9000}{20} i

Solution

x_{1} = - \frac{4 9000}{20} - \frac{4 9000}{20} i, x_{2} = \frac{4 9000}{20} + \frac{4 9000}{20} i, x_{3} = 0

Alternative Form

x_{1} \approx - 0.487002 - 0.487002 i, x_{2} \approx 0.487002 + 0.487002 i, x_{3} = 0

Show Solution