giúp e với ah , e cảm ơn

`@Gn2ct`

`a) x + 13=-19`

`x= (-19)-13`

`x=-32`

Vậy `x=-32`

`b) 13-2(x+3)=27`

`2(x+3)=13-27`

`2(x+3)= -14`

`x+3 = (-14):2`

`x+3= -7`

`x=(-7)+3`

`x=-4`

Vậy `x=-4`

`c) (x+5)^2 - 3 = 13`

`(x+5)^2 = 16`

`(x+5)^2 = (+-4)^2`

`=>` $\left[\begin{matrix} x+5=4\\ x+5=-4\end{matrix}\right.$

`=>` $\left[\begin{matrix} x=-1\\ x=-9\end{matrix}\right.$

`d) (x-7)(18:x+3)=0`

`=>`$\left[\begin{matrix} x-7=0\\ 18:x+3=0\end{matrix}\right.$

`=>` $\left[\begin{matrix} x=7\\ 18:x = -3\end{matrix}\right.$

`=>` $\left[\begin{matrix} x=7\\ x=-6\end{matrix}\right.$