volume_mute
Identify the Base in a Tricky Expression
publish date: 2026/05/07 07:22:10.113699 UTC
volume_mute
In the expression \(-7^{9}\), what is the base?
Correct Answer
\(7\)
Explanation
Because there are no parentheses around \(-7\), the base is \(7\), not \(-7\). The expression \(-7^9\) means the opposite of \(7^9\). Compare with \((-7)^9\), where the base is \(-7\).
Reference
Mathematics for college students