Ⅰ.
polynomial
01.
Operation of polynomials
02.
Remainder theorem and factorization

Ⅱ.
equation
03.
complex number
04.
Quadratic equation
05.
Quadratic equations and quadratic functions
06.
Various equations

Ⅲ.
Inequality
07.
simultaneous linear inequalities
08.
Quadratic inequalities and simultaneous quadratic inequalities

Ⅳ.
Permutations and combinations
09.
Permutations and combinations

V.
Matrices and their operations
10.
Matrices and their operations

Learn the concept of A step,
- Includes all the concepts you need to know
- Basic problems are presented for each concept, making it easy to check whether the concept is understood correctly.

B step previous questions & modifications
- The learning structure is structured so that previous exam questions are arranged in order of difficulty on the left side, and similar problems that are variations of the questions on the left side are arranged on the right side, so that students learn horizontally and repeat vertically.

C step skill completion
- Summary learning
- Configured to be able to check for B step type

Friendly commentary
- Answers and explanations: Clear explanations like a teacher's lecture notes that point out the key points
An explanation that allows you to intuitively understand the conditions of the problem
Commentary to help you solve real-world problems
- Digital commentary: Detailed and faithful to the intent of the questions
Logical and easy explanation
Commentary to help you hone your skills