Question

[Thúy Ngọc]

( x + 10 ) . ( 8x + 12 ) = 0

Answer 1

[ILoveMath]

\(\left(x+10\right)\left(8x+12\right)=0\\ \Leftrightarrow\left[{}\begin{matrix}x+10=0\\8x+12=0\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}x=-10\\x=-\dfrac{3}{2}\end{matrix}\right.\)

Answer 2

[⌛メ𝕹𝖊𝖕𝖆𝖑 ツ[𝕿𝖊𝖆𝖒 𝕹𝖊𝖕𝖆𝖑]]

\(\left(x+10\right)\left(8x+12\right)=0\)

\(\Leftrightarrow4\left(x+10\right)\left(2x+3\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x+10=0\\2x+3=0\end{cases}\Leftrightarrow\orbr{\begin{cases}x=-10\\x=-\frac{3}{2}\end{cases}}}\)