Frequent Questions about our Solver

The problem

Click to see the original problem

how did you get all real numbers

Answer provided by our tutors

Left hand side of the inequality has absolute value and absolute value of any number is always greater than or equal to zero (by the definition of absolute value).

Right hand side of the inequality is negative number, '-14', so the inequality is valid for any number 'x'.

You can obtain an explanation for any step by clicking on it. Please note that you cannot click on the very first expression, which is the original problem:

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