cho mik hỏi a) 2x + 1 + (1 – 2y)i = 2 – x + (3y – 2)i b) 4x + 3 + (3y – 2)i = y +1 + (x – 3)i c) x + 2y + (2x – y)i = 2x + y + (x + 2y)i

0 bình luận về “cho mik hỏi a) 2x + 1 + (1 – 2y)i = 2 – x + (3y – 2)i b) 4x + 3 + (3y – 2)i = y +1 + (x – 3)i c) x + 2y + (2x – y)i = 2x + y + (x + 2y)i”

1. a) Phần thực bằng phần thực, phần ảo bằng phần ảo:
   $\Rightarrow \left\{ \begin{array}{l} 2x+1=2-x \\ 1-2y=3y-2 \end{array} \right .$
   $\Rightarrow \left\{ \begin{array}{l} x=\dfrac{1}{3} \\ y=\dfrac{3}{5} \end{array} \right .$

   b) $\Rightarrow \left\{ \begin{array}{l} 4x+3=y+1 \\ 3y-2=x-3 \end{array} \right .$
   $\Rightarrow \left\{ \begin{array}{l} x=\dfrac{-7}{11} \\ y=\dfrac{-6}{11} \end{array} \right .$

   c) $\Rightarrow \left\{ \begin{array}{l} x+2y=2x+y \\ 2x-y=x+2y\end{array} \right .$
   $\Rightarrow x=y=0$

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