\(4,5x^2y\cdot-2xyz\)
\(=\left(4,5\cdot-2\right)\left(x^2\cdot z\right)\left(y\cdot y\right)\cdot z\)
\(=-9x^3y^2z\)
Bậc: \(3+2+1=6\)
`4,5x^2y(-2)xyz`
`= -9(x^2.x).(y.y)z`
`= -9x^3y^2z`.
Bậc: `3+2+1=6`.
4,5x2y⋅−2xyz
=(4,5-2)(x2.z)(y.y).z
=-9x3y2z
bâc 6