-4x inequation

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-4*x > 0

- 4 x > 0

-4*x > 0

Detail solution

Given the inequality:

- 4 x > 0

To solve this inequality, we must first solve the corresponding equation:

- 4 x = 0

Solve:
Given the linear equation:

-4*x = 0

Divide both parts of the equation by -4

x = 0 / (-4)

x_{1} = 0

x_{1} = 0

This roots

x_{1} = 0

is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:

x_{0} < x_{1}

For example, let's take the point

x_{0} = x_{1} - \frac{1}{10}

- \frac{1}{10}

- \frac{1}{10}

substitute to the expression

- 4 x > 0

- \frac{\left(-1\right) 4}{10} > 0

2/5 > 0

the solution of our inequality is:

x < 0

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       x1

Solving inequality on a graph

Rapid solution 2 [src]

(-oo, 0)

x\ in\ \left(-\infty, 0\right)

x in Interval.open(-oo, 0)

Rapid solution [src]

And(-oo < x, x < 0)

-\infty < x \wedge x < 0

(-oo < x)∧(x < 0)