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Solve the inequality and graph the solution.

[tex]\[ |2x + 5| \geq -7 \][/tex]


Sagot :

To solve the inequality [tex]\( |2x + 5| \geq -7 \)[/tex], let's carefully analyze and go through the steps:

1. Understanding Absolute Values:
- The absolute value of any real number is always non-negative. This means [tex]\( |2x + 5| \)[/tex] is always greater than or equal to 0.

2. Compare with the Right-Hand Side:
- The inequality given is [tex]\( |2x + 5| \geq -7 \)[/tex].
- Since [tex]\( |2x + 5| \)[/tex] is always non-negative and therefore always greater than or equal to 0, it will always be greater than or equal to [tex]\(-7\)[/tex].

3. Conclusion:
- Given that [tex]\( |2x + 5| \geq -7 \)[/tex] is always true because [tex]\( |2x + 5| \)[/tex] is always at least 0, the solution to the inequality is all real numbers.

To summarize, the inequality [tex]\( |2x + 5| \geq -7 \)[/tex] is always true for any real number [tex]\( x \)[/tex].

Graphing the Solution:
- Since the solution includes all real numbers, you would represent this on a number line by shading the entire line, indicating that every point on the line (every real number) is a solution.

The step-by-step solution shows the understanding that the absolute value is non-negative and hence the inequality holds for all real numbers. Thus, the graph of the solution on a number line would be a fully shaded line covering all real numbers.