Question

(2x+1)^2-16x^3:(2x)^2=10

Answer 1

\(\Leftrightarrow4x^2+4x+1-4x=10\\ \Leftrightarrow4x^2=9\Leftrightarrow x^2=\dfrac{3}{2}\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{3}{2}\\x=-\dfrac{3}{2}\end{matrix}\right.\)

Answer 2

\(\Leftrightarrow4x^2+4x+1-4x=10\\ \Leftrightarrow4x^2=9\\ \Leftrightarrow\left[{}\begin{matrix}x=-\dfrac{3}{2}\\z=\dfrac{3}{2}\end{matrix}\right.\)