Question

Answer 1

b: Ta có: G(x)=0

\(\Leftrightarrow5x^2-7x+2=0\)

\(\Leftrightarrow\left(x-1\right)\left(5x-2\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=1\\x=\dfrac{2}{5}\end{matrix}\right.\)

Answer 2

a: Ta có: f(x)=0

\(\Leftrightarrow x\left(3x-2\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=\dfrac{2}{3}\end{matrix}\right.\)