Question

5(x+2)-15(x+2)\(^2\)=0

 

Answer 1

`5(x+2)-15(x+2)^2=0`

`<=> (x+2) (5- 15x - 30)=0`

`<=>(x+2) ( -15x-25)=0`

\(\Leftrightarrow\left[{}\begin{matrix}x+2=0\\-15x-25=0\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}x=-2\\-15x=25\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}x=-2\\x=-\dfrac{5}{3}\end{matrix}\right.\)