Question

Phân tích đa thức sau thành nhân tử: x³ - 4x² + 12x - 27

Answer 1

(x-3)(x^2-x+9)

Answer 2

k

cho

mk 

mk 

giải 

cho

Answer 3

\(x^3-4x^2+12x-27=x^3-27-4x^2+12x\)

\(=\left(x-3\right)\left(x^2+3x+9\right)-4x\left(x-3\right)\)

\(=\left(x-3\right)\left(x^2-x+9\right)\)

Answer 4

\(x^3-4x^2+12x-27\)

\(=x^3-3x^2-x^2+3x+9x-27\)

\(=x^2\left(x-3\right)-x\left(x-3\right)+9\left(x-3\right)\)

\(=\left(x-3\right)\left(x^2-x+9\right)\)

.