Question

Phân tích đa thức thành nhân tử A)2X³ -12X²+18x B)X²+5X+6

Answer 1

\(a,2x^3+12x^2+18x\)

\(=2x\left(x^2+6x+9\right)\)

\(=2x\left(x^2+2.x.3+3^2\right)\)

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

b, \(x^2+5x+6\)

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

\(=x\left(x+3\right)+2\left(x+3\right)\)

\(=\left(x+3\right)\left(x+2\right)\)

Answer 2

`a, x(x^2 - 6x + 9)`

`= x(x-3)^2`

`b, x^2 +2x + 3x + 6`

`= (x+2)(x+3)`

Answer 3