Question

Answer 1

a)x=-4 nhé

Answer 2

a, \(4x\left(x^2-16\right)=0\Leftrightarrow4x\left(x+4\right)\left(x-4\right)=0\Leftrightarrow x=0;x=-4;x=4\)

b, đk x >= 2/3 

\(\left[{}\begin{matrix}x-4=3x-2\\x-4=2-3x\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}2x=-2\\4x=6\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-1\left(ktm\right)\\x=\dfrac{3}{2}\end{matrix}\right.\)

c, \(\dfrac{4x-1}{9}-\dfrac{5-3x}{6}< 0\)

\(\Leftrightarrow\dfrac{24x-6-45+27x}{54}< 0\Rightarrow51x-51>0\Leftrightarrow x>1\)

Answer 3

A) x=-4