Question

Giúp mình với ạ.

Mình cảm ơn ạ.

Answer 1

b: \(\Leftrightarrow\dfrac{-m^2+3}{m}=\dfrac{13}{4}\)

\(\Leftrightarrow-4m^2+12=13m\)

\(\Leftrightarrow4m^2-13m-12=0\)

\(\Leftrightarrow\left(m-4\right)\left(4m+3\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}m=4\\m=-\dfrac{3}{4}\end{matrix}\right.\)