Question

7/4.x² - -8/4x = 0

Answer 1

\(\frac{7}{4}x^2--\frac{8}{4}x=0\)

\(\Leftrightarrow x\left(\frac{7}{4}x+\frac{8}{4}\right)=0\)

\(\Leftrightarrow\frac{7}{4}x+\frac{8}{4}=0\)

\(\Leftrightarrow\frac{7}{4}x=-\frac{8}{4}\)

\(\Leftrightarrow x=-1\frac{1}{7}\)

Answer 2

\(\frac{7}{4}x^2-\left(-\frac{8}{4}x\right)=0\)

\(\Leftrightarrow x\left(\frac{7}{4}x+\frac{8}{4}\right)=0\)

\(\Leftrightarrow x\left(\frac{7}{4}x+\frac{8}{4}\right)=0\)

\(\Leftrightarrow\frac{7}{4}x=-\frac{8}{4}\)

\(\Leftrightarrow\frac{7}{4}x=-\frac{8}{4}\)