Tolong jawab pake jalan

[tex] \left[\begin{array}{ccc}x& y^{2} &\\4&5&\\&&\end{array}\right] \left[\begin{array}{ccc}1\\-2\\\end{array}\right] = 4 \left[\begin{array}{ccc}1\\1\\\end{array}\right] [/tex]

 [tex]\left[\begin{array}{ccc}x - 2 y^{2} \\4 - 10\\\end{array}\right] = \left[\begin{array}{ccc}4\\4\\\end{array}\right][/tex] 

x - 2y² = 4