\(-11x-3x^2-10=0\)
\(\Leftrightarrow3x^2+11x+10=0\)
\(\Leftrightarrow3x\cdot\left(x+2\right)+5\cdot\left(x+2\right)=0\)
\(\Leftrightarrow\left(3x+5\right)\cdot\left(x+2\right)=0\)
\(\Rightarrow x=\left[{}\begin{matrix}-2\\-\frac{5}{3}\end{matrix}\right.\)
-3x2-11x-10=0
=>(3x+5)(x+2)=0
=>x=-5/3 hoặc x=-2