Result from solve() command shows c_0

[Jan 11]

My opinion on this topic is clear. When I solve an equation or inequality on paper, I can make a mistake. But then I check them on the calculator. But when the calculator makes mistakes, that's not good. The calculator should do mathematical operations perfectly and error-free. People want to have confidence in the calculator (this is to be a reliable teacher). That's why I have a request to Parisse.
Please correct the solution to this unique equation and inequality. Not all are geniuses like you.