Tìm x:
a.\(5x-3\left\{4x-2\left[4x-3(5x-2)\right]\right\}=182\)
b.\(\left(x+2\right)\left(x+3\right)-\left(x-2\right)\left(x+5\right)=0\)
c.\(\left(2x+3\right)\left(x-4\right)+\left(x-5\right)\left(x-2\right)=\left(3x-5\right)\left(x-4\right)\)
Giúp mk vs!!
b) \(\left(x+2\right)\left(x+3\right)-\left(x-2\right)\left(x+5\right)=0\)
\(\Leftrightarrow\left(x+2\right)\left(x+3\right)+\left(x+2\right)\left(x+5\right)=0\)
\(\Leftrightarrow\left(x+2\right)\left(x+3+x+5\right)=0\)
\(\Leftrightarrow\left(x+2\right)\left(2x+8\right)=0\)
\(\Leftrightarrow\left\{{}\begin{matrix}x+2=0\\2x+8=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=-2\\x=-4\end{matrix}\right.\)
chán òi ko lm nữa đâu có ng đg bùn mk cx bùn theo lun xl nha