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For what value(s) of [tex]$x$[/tex] is the equation [tex]$\sqrt{x} = -7$[/tex] true?

Choose one answer:
A. -49 only
B. 49 only
C. -49 and 49
D. None of the above


Sagot :

To determine the value(s) of [tex]\( x \)[/tex] for which the equation [tex]\(\sqrt{x} = -7\)[/tex] is true, let's analyze the properties of the square root function.

1. By definition, the square root of a number always results in a non-negative value. This means [tex]\(\sqrt{x} \geq 0\)[/tex] for any real number [tex]\( x \)[/tex].

2. Given the equation [tex]\(\sqrt{x} = -7\)[/tex], we need to evaluate if it is possible for this equation to hold true.
- Since [tex]\(\sqrt{x}\)[/tex] is always non-negative, it cannot be equal to a negative number.
- Therefore, [tex]\(\sqrt{x} = -7\)[/tex] is inherently contradictory because [tex]\(-7\)[/tex] is negative and the square root function cannot yield a negative result.

3. Based on the properties outlined for the square root, there is no real number [tex]\( x \)[/tex] that would satisfy the equation [tex]\(\sqrt{x} = -7\)[/tex].

4. Consequently, the equation [tex]\(\sqrt{x} = -7\)[/tex] has no solution.

Therefore, the correct answer is:

(D) None of the above