The expression that is undefined is \(-9 ÷ 0\). Division by zero is not defined in mathematics, making that expression undefined. The other expressions involve division by non-zero numbers and are therefore well-defined.
Which expression is undefined?
Group of answer choices
2 ÷ (−7)
(−7) ÷ 2
0 ÷ -9
-9 ÷ 0
1 answer