class 12 maths determinants

$x + 2y = 2,2x + 3y = 3.$

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📘 Determinants NCERT,Ex.4.6,Q.1,Page.136 SA

$x + 2y = 2,2x + 3y = 3.$

Official Solution

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The system of equations can be written in the form$AX = B$,

where
$A = \left[ {\begin{array}{rrrrrrrrrrrrrrrrrrrr}1&2\\2&3\end{array}} \right],X = \left[ {\begin{array}{rrrrrrrrrrrrrrrrrrrr}x\\y\end{array}} \right],B = \left[ {\begin{array}{rrrrrrrrrrrrrrrrrrrr}2\\3\end{array}} \right]$

Now, $|A| = 3 - 4 = - 1 \ne 0$

Hence, system of equations is consistent.

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