Solve each system by using the matrix inverse method. $$\begin{array}{l} 2.1 x+y=\sqrt{5} \\ \sqrt{2} x-2 y=5 \end{array}$$
Added by Ines R.
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1 & 1 \\ \sqrt{2} & -2 \end{pmatrix} \begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} \sqrt{5} \\ 5 \end{pmatrix}$$ Show more…
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