Answer:
24 is divisible 6 but not 18.
Step-by-step explanation:
The statement in the question is not true. So a counterexample is an example of the statement being false. Consider 24. 24 is divisible by 6, but 24 is not divisible by 18.
x = 4 and 3
[7±√(-7)²-4(1)(12)]/2
x = 4, 3
