a)\(4x-12=0\)

b)\(x\left(x+1\right)-\left(x+2\right)\left(x-3\right)=7\)

c)\(\dfrac{x-3}{x+1}=\dfrac{x^2}{x^2-1}\)

giải phương trình

1)\(\left(x-2\right)\left(3+2x\right)-2x\left(x+5\right)=6\)

2)\(x^2-4-\left(x-5\right)\left(x-2\right)=0\)

3)\(\dfrac{x-3}{3}-\dfrac{x+2}{2}=\dfrac{x}{6}\)

4)\(\dfrac{x+2}{x-2}-\dfrac{x-2}{x+2}+\dfrac{3x-1}{x-4}-6\)

5)\(\dfrac{96}{x^2-16}=\dfrac{2x-1}{x+4}+\dfrac{3x-1}{x-4}-6\)