= 6 power of a+6 power of a

=2a to the 6th power

The second degree of A, the fifth degree of A+the third degree of A, the second degree of A and the third degree of A..

= 8 power of a+8 power of a

=2a to the 8th power

A's quadratic. Three times of+a. Five times of+a.

= 6 power of a+6 power of a+6 power of a

=3a to the 6th power

(If it is PEP,)

This is not a question of the second volume of the seventh grade.

But the content in Chapter 15 "Multiplication, division and factorization of algebraic expressions" in the first volume of the eighth grade.

The above topic is the exercise of "the same base power of 15. 1. 1".

In this chapter,

Factorization is difficult,

however

It also contains two parts:

The common factor method and formula method are put forward.

So,

Before factorization,

We must learn the square difference formula and the complete square formula well.

Of these two,

The complete square formula has some difficulties,

But just remember the formula:

The first grid, the tail grid,

End-to-end products are twice in the center.