Teahouses originated in Kaohsiung City, Taiwan Province Province. A student who just graduated from junior high school just picked fresh oranges, squeezed the juice of Hyun Guo Shifen into a bottle, then added some clear water and some sugarcane water and put it in the refrigerator. When he took it out, it was cold and cool. It was delicious at that time. The boy tried to make different flavors with different juices. Later, with the support of his family, he opened a milk tea shop called Paopao Tea, which is the earliest historical origin of milk tea in Chinese mainland and even in Asia. ?

Tea shop refers to a facility or public restaurant that provides catering services such as milk tea and drinks for the general public in a certain place. Foamed tea is a very popular drink. According to some calculations, there are more than10,000 tea shops in Taiwan Province province, and about 2,300 people own one. The milk tea business in Hangzhou has already flourished. There are tea shops in higher education areas, commercial streets and residential areas, and the prospect of the beverage industry is optimistic by more and more people.

Matching method refers to transforming a formula (including rational formula and transcendental formula) or a part of a formula into a completely flat way or the sum of several completely flat ways through continuous deformation. This method is often used in identity deformation, and it is one of the powerful means to solve the problem by discovering the hidden conditions in the topic.

In basic algebra, collocation method is a method for transforming quadratic polynomial into the sum of the square of linear polynomial and constant. This method converts the polynomial in the following form into the coefficients A, B, C, D and E in the above expression, which can also be expressions and contain variables other than X. Matching method is usually used to derive the root formula of quadratic equation: our purpose is to turn the left side of the equation into a complete square. Because the complete square in the question has (x? +? y)2？ =? x2？ + 2xy？ +? Y2 form, you can deduce 2xy? = (b/a)x, so y? =? b/2a .