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OpenStudy (anonymous):
Matrix problem ! Solve the system of linear equations x + 2y = 8 and -2x + 4y = -8 using the matrix method. Help!!!!???? Thanks!
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OpenStudy (saifoo.khan):
\[\left[\begin{matrix}1 & 2 \\ -2 & 4\end{matrix}\right] \left(\begin{matrix}x \\ y\end{matrix}\right) = \left(\begin{matrix}7 \\ 6\end{matrix}\right)\]
OpenStudy (saifoo.khan):
Learn the method here: http://www.youtube.com/watch?v=AUqeb9Z3y3k&feature=player_detailpage#t=356s
OpenStudy (anonymous):
Oh okay, thank you !
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