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Sagot :
Sure, let's analyze each equation to determine if [tex]\(x = 9\)[/tex] is a possible solution.
1. Equation: [tex]\(|x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |x| = |9| = 9 \][/tex]
This is true.
2. Equation: [tex]\(-|x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|x| = -|9| = -9 \][/tex]
This is not equal to 9. So, this is false.
3. Equation: [tex]\(-|-x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|-x| = -|-9| = -9 \][/tex]
This is not equal to 9. So, this is false.
4. Equation: [tex]\(-|-x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|-x| = -|-9| = -9 \][/tex]
This is true.
5. Equation: [tex]\(|x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |x| = |9| = 9 \][/tex]
The absolute value cannot be negative, so this is false.
6. Equation: [tex]\(|-x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |-x| = |-9| = 9 \][/tex]
This is true.
7. Equation: [tex]\(|-x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |-x| = |-9| = 9 \][/tex]
Again, the absolute value cannot be negative, so this is false.
Therefore, [tex]\(x = 9\)[/tex] is a possible solution for the following equations:
1. [tex]\( |x| = 9 \)[/tex]
2. [tex]\( -|-x| = -9 \)[/tex]
3. [tex]\( |-x| = 9 \)[/tex]
1. Equation: [tex]\(|x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |x| = |9| = 9 \][/tex]
This is true.
2. Equation: [tex]\(-|x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|x| = -|9| = -9 \][/tex]
This is not equal to 9. So, this is false.
3. Equation: [tex]\(-|-x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|-x| = -|-9| = -9 \][/tex]
This is not equal to 9. So, this is false.
4. Equation: [tex]\(-|-x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ -|-x| = -|-9| = -9 \][/tex]
This is true.
5. Equation: [tex]\(|x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |x| = |9| = 9 \][/tex]
The absolute value cannot be negative, so this is false.
6. Equation: [tex]\(|-x| = 9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |-x| = |-9| = 9 \][/tex]
This is true.
7. Equation: [tex]\(|-x| = -9\)[/tex]
For [tex]\(x = 9\)[/tex]:
[tex]\[ |-x| = |-9| = 9 \][/tex]
Again, the absolute value cannot be negative, so this is false.
Therefore, [tex]\(x = 9\)[/tex] is a possible solution for the following equations:
1. [tex]\( |x| = 9 \)[/tex]
2. [tex]\( -|-x| = -9 \)[/tex]
3. [tex]\( |-x| = 9 \)[/tex]
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