What is Tigong factor?

What is Tigong factor?


In general, if each item of a polynomial has a common factor, you can put the common factor outside the brackets and write the polynomial in the form of factor product. This method of factoring is called the method of quoting the common factor



What is the common factor


The common factor method is to extract the same factor in a polynomial, just like the multiplication distribution rate, such as AB + AC = a (B + C). This is the common factor method, which extracts the same factor a



Common factor method for quadratic equation of one variable
How to use all kinds of formulas to solve problems, such as sum of squares and so on, teach me


Square difference: (a + b) (a-b) = a ^ 2-B ^ 2
Complete square: (a + b) ^ 2 = a ^ 2 + 2Ab + B ^ 2
(a-b)^2=a^2-2ab+b^2