Tìm P biết: P + 

Câu hỏi: Tìm P biết: P + $\frac{\text{4x}-\text{12}}{{\text{x}}^{\text{3}}-{\text{3x}}^{\text{2}}-\text{4x}+\text{12}}=\frac{\text{3}}{\text{x}-\text{3}}-\frac{{\text{x}}^{\text{2}}}{\text{4}-{\text{x}}^{\text{2}}}$

A. $P = \frac{\text{x}}{\text{x}+\text{3}}$

B. $P = \frac{\text{x}}{\text{x}-\text{3}}$

C. $P = \frac{\text{1}}{\text{x}-\text{3}}$

D. $P = \frac{\text{x-3}}{\text{x}}$