diberikan Matriks 2x2

[tex]x = \binom{ - 1 \: - 2}{2 \: \: \: \: \: 3 } + \binom{1 \: \: 0}{0 \: \: 1} \binom{ - 3b \: \: \: \: c}{ - a \: \: \: \: \: b} \\ x = \binom{ - 1 \: - 2}{2 \: \: \: \: \: 3 } + \binom{ - 3b \: \: \: c}{ - a \: \: \: \: b} \\ x = \binom{ - 1 - 3b \: \: \: \: - 2 + c}{ 2 - a \: \: \: \: \: \: \: \: \: \: \: 3 + b} \\ det = ( - 1 - 3b)(3 + b) - (2 - a)( - 2 + c) \\ det =( - 3 - b - 9b - 3 {b}^{2} ) - ( - 4 + 2c + 2a - ac) \\ det = - 3 - 10b - 3 {b}^{2} + 4 - 2c - 2a + ac \\ det = 1 - 10b - 3 {b}^{2} - 2c - 2a + ac[/tex]
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​x=(​23​−1−2​​)+(​01​10​​)(​−ab​−3bc​​)​x=(​23​−1−2​​)+(​−ab​−3bc​​)​x=(​2−a3+b​−1−3b−2+c​​)​det=(−1−3b)(3+b)−(2−a)(−2+c)​det=(−3−b−9b−3b​2​​)−(−4+2c+2a−ac)​det=−3−10b−3b​2​​+4−2c−2a+ac​det=1−10b−3b​2​​−2c−2a+ac​​
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