cứu em đi mn gần nộp rồi:<

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

`<=>6x-9+4-2x=-3`

`<=>4x=-3+5`

`<=>4x=2`

`<=>x=1/2`

`b)2x(x^2-2)+x^2(1-2x)-x^2=-12`

`<=>2x^3-4x+x^2-2x^3-x^2=-12`

`<=>-4x=-12`

`<=>x=3`

`c)3x(2x+3)-(2x+5)(3x-2)=8`

`<=>6x^2+9x-6x^2-15x+4x+10=8`

`<=>-2x=-2`

`<=>x=1`

`d)4x(x-1)-3(x^2-5)-x^2=(x-3)-(X+4)`

`<=>4x^2-3x-3x^2+15-x^2=x-3-x-4`

`<=>-3x+15=-7`

`<=>22=3x`

`<=>x=22/3`

`e)2(3x-1)(2x+5)-6(2x-1)(x+2)=-6`

`<=>12x^2-4x+30x-10-12x^2+12x-24x+12=-6`

`<=>14x=-8`

`<=>x=-4/7`