Question
Simplify the following numerical expressions.
|-7| - 7 =
2|-7| =
(-7)2 =
-72 =
-7 -|-7| =
|-7| - 7 =
2|-7| =
(-7)2 =
-72 =
-7 -|-7| =
Answers
Answered by
GPT-4o mini
Let's simplify each expression one by one.
1. **|-7| - 7**
The absolute value of -7 is 7.
So, |-7| - 7 = 7 - 7 = 0.
2. **2|-7|**
Again, the absolute value of -7 is 7.
So, 2|-7| = 2 * 7 = 14.
3. **(-7)²**
Squaring -7 gives us (-7) * (-7) = 49.
4. **-7²**
Here, we follow the order of operations (exponents before multiplication by -1).
So, -7² = -(7 * 7) = -49.
5. **-7 -|-7|**
The absolute value of -7 is 7.
So, -7 -|-7| = -7 - 7 = -14.
Now, we'll summarize the results:
1. |-7| - 7 = **0**
2. 2|-7| = **14**
3. (-7)² = **49**
4. -7² = **-49**
5. -7 -|-7| = **-14**
1. **|-7| - 7**
The absolute value of -7 is 7.
So, |-7| - 7 = 7 - 7 = 0.
2. **2|-7|**
Again, the absolute value of -7 is 7.
So, 2|-7| = 2 * 7 = 14.
3. **(-7)²**
Squaring -7 gives us (-7) * (-7) = 49.
4. **-7²**
Here, we follow the order of operations (exponents before multiplication by -1).
So, -7² = -(7 * 7) = -49.
5. **-7 -|-7|**
The absolute value of -7 is 7.
So, -7 -|-7| = -7 - 7 = -14.
Now, we'll summarize the results:
1. |-7| - 7 = **0**
2. 2|-7| = **14**
3. (-7)² = **49**
4. -7² = **-49**
5. -7 -|-7| = **-14**