Question

find d by determinant method for the equation x+y=3, 3x-2y=4​

Answer 1

hope u got ur answer...

Answer 2

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The value of this determinant is found by finding the difference between the diagonally down product and the diagonally up product

now here, the equation is.

x + y = 3

3x - 2y = 4

The denominator determinant, D, is formed by taking the coefficients of x and y from the equations written in standard form.

$\sf \: D = \begin{gathered} \left[\begin{array}{cc}1&1\\3&-2\end{array}\right] \end{gathered}$

According to formula,

D = ( 1 ) × ( -2 ) - ( 1 ) × ( 3 )

D = - 2 - 3

D = -5

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