Question

[N]

1)x^3-x^2+4

2)4x^4+4x^3-x^2-x

3)x^4+4a^4

phan tich da thuc thanh nhan tu

Answer 1

[Nguyệt]

\(4x^4+4x^3-x^2-x\)

\(=4x^3.\left(x+1\right)-x.\left(x+1\right)=\left(4x^3-x\right).\left(x+1\right)\)