`c)(3x-2)^2-25=0`

`<=>(3x-2-5)(3x-2+5)=0`

`<=>(3x-7)(3x+3)=0`

`<=>` \(\left[ \begin{array}{l}3x-7=0\\3x+3=0\end{array} \right.\)

`<=>` \(\left[ \begin{array}{l}3x=7\\3x=-3\end{array} \right.\)

`<=>` \(\left[ \begin{array}{l}x=\dfrac{7}{3}\\x=-1\end{array} \right.\) 

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

`<=>4x^2-1=3x(x-1)+2(x-1)`

`<=>4x^2-1=3x^2-3x+2x-2`

`<=>4x^2-1=3x^2-x-2`

`<=>4x^2-1-3x^2+x+2=0`

`<=>x^2+x+1=0`

`<=>(x+1/2)^2+3/4=0`

`->` đề sai