Question

[thành piccolo]

phan tich da thuc thanh phan tu

a,32x^4+1

b,x^8+x+1

c,x^7+x^2+1

Answer 1

[Ngọc Vĩ]

b/ \(=x^8-x^7+x^5-x^4+x^2+x^6-x^5+x^3-x^2+1+x^7-x^6+x^4-x^3+x\)

\(=x^2\left(x^6-x^5+x^3-x^2+1\right)+\left(x^2-x^5+x^3-x^2+1\right)+x\left(x^6-x^5+x^3-x^2+1\right)\)

\(=\left(x^6-x^5+x^3-x^2+1\right)\left(x^2+1+x\right)\)