\(P:\frac{4x-2-16}{2x+1}=\frac{4x^2+4x+1}{x-2}\)
\(\Rightarrow P=\frac{4x^2+4x+1}{x-2}.\frac{4x^2-16}{2x+1}\)
= \(\frac{\left(2x+1\right)^2}{x-2}.\frac{4.\left(x-2\right)\left(x+2\right)}{2x+1}\)
\(\Rightarrow P=4.\left(2x+1\right).\left(x+2\right)\)
\(=4.\left(2x^2+x+4x+2\right)\)
= \(8x^2+40x+8\)
Chúc bạn học tốt !!!