First, the multiplication of algebraic expressions
Same base power multiplication
The power of power
Product multiplier
Multiply the monomial by the monomial.
Polynomial multiplied by single term
Polynomial multiplied by polynomial
Power division of the same radix
Divide the monomial by the monomial.
Polynomial divided by monomial
Two. Multiplication formula
formula for the difference of square
Perfect square trinomial
Rules for removing brackets: when adding brackets, if there is a plus sign before the brackets, all enclosed items in the live number will remain unchanged; If there is a minus sign in front of parentheses, all items expanded into parentheses will change their signs.
Three. resolution into factors
Definition: Polynomial is transformed into the product of several algebraic expressions. Formula deformation like this is called factorization of this polynomial, which is also called factorization of this polynomial.
Methods of improving common factor
Formula method
Cross multiplication