You can learn quadratic functions offline. For example, polynomial expansion, factorization, completing the square, quadratic graph, quadratic equation, quadratic inequality. Score high in Challenge Mode to improve your rank!!
Version history
1.0.9
2023-06-27
Fixed bugs.
1.0.8
2023-06-22
Fixed bugs.
1.0.7
2023-01-21
Fixed bugs.
1.0.6
2022-10-04
Fixed bugs.
1.0.5
2022-08-24
Fixed bugs.
1.0.4
2022-06-07
Fixed the correctness judgment of the problem using the solution formula.