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If \(\begin{bmatrix}3c+6&a-d \\[0.3em]a+d & 2-3b \\[0.3em]\end{bmatrix}\) = \(\begin{bmatrix}12&2 \\[0.3em]-8 & -4\\[0.3em]\end{bmatrix}\)are equal, then value of ab - cd is :[(3c+d,a-d),(a+d,2-3b)] = [(12,2),(-8,-4)](a) 4(b) 16(c) -4(d) -16 |
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Answer» Option : (a) 4 |
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