The exercise asks for solutions to quadratic equations and asks to print "invalid" if it is not a valid quadratic equation.
The solution however also solves linear equations.
https://github.com/dodona-edu/programmeursleerling/tree/master/chapters/06%20conditions/05%20exercises/04%20quadratic%20equations
Additionally, the englisch description asks to print "Ongeldige vergelijking" instead of "Invalid equation"
checklist
The exercise asks for solutions to quadratic equations and asks to print "invalid" if it is not a valid quadratic equation.
The solution however also solves linear equations.
https://github.com/dodona-edu/programmeursleerling/tree/master/chapters/06%20conditions/05%20exercises/04%20quadratic%20equations
Additionally, the englisch description asks to print "Ongeldige vergelijking" instead of "Invalid equation"
checklist