Question

4x² – 0,12x=0 Giúp mình với ạ

Answer 1

\(\Leftrightarrow\dfrac{4x^2}{1}-\dfrac{3x}{25}=0\)

\(\Leftrightarrow\dfrac{\left(2x\right)^2.25}{25}-\dfrac{3x}{25}=0\)  ( đkxđ x thuộc R)

\(\Leftrightarrow100x^2-3x=0\)

\(\Leftrightarrow x\left(100x-3\right)=0\)

\(\Rightarrow\left\{{}\begin{matrix}x=0\\x=\left(0+3\right):100=\dfrac{3}{100}\end{matrix}\right.\)(tm)

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