Question

[Pé Ken]

1)x^6+3x^5+4x^4+4x^3+4x^2+3x+1

2)(x+y+z)^2+(x-2)^2

3)(a-b)^3+(b-c)^3+(c-a)^3

4)10(x^7+y^7+z^7)=7(x^2+y^2+z^2)(x^5+y^5+z^5)

Answer 1

[Thắng Nguyễn]

đề bắt lm cái j v

Answer 2

[Pé Ken]

phan h da thuc thanh nhan tu