Question

To solve x +y=3, 3x-2y-40by determnant method, find D​

Answer 1

Answer:

Step-by-step explanation:

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.

D =

according to formula,

D = ( 1 ) × ( -2 ) - ( 1 ) × ( 3 )

D = - 2 - 3

D = -5

Answer 2

Step-by-step explanation:

Here at first we have two equations

x+y = 3 ----1

3x-2y=4----2

The denominator , D is formed by taking the cofficients of 'x' and 'y' from the standered form equation

so now ,

according to the formula we know that

D=(1)×(-2)-1×(3)

D= -2-3

D= -5

Hence , D = -5 is our required amswer