Question

Rút gọn 

-3x(2x+1)+(2x-1)(3x+2)

 

Answer 1

`-3x(2x+1)+(2x-1)(3x+2)`

`=-6x^2-3x+6x^2+4x-3x-2`

`=(6x^2-6x^2)+(4x-3x-3x)-2`

`=-2x-2`

Answer 2

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

= \(-2x-2\)