If you want to learn math well, you must remember the formula. All the questions are always the same, so it is very important to understand and remember the formula thoroughly. Below I have compiled all the mathematical formulas that junior high school must recite for your reference.

Multiplication and factorization

Operating characteristics of power supply

quadratic radical

Triangle inequality

The sum of the first n terms of some series.

One-dimensional quadratic root

linear function

Frequency and probability

Sine (cosine) theorem

formulas of trigonometric functions

Area formula