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11 December, 02:49

Given the system of equations, what is the value of the system determinant? x + y = 8 x - y = 10 0 - 1 - 2

+1
Answers (2)
  1. 11 December, 02:59
    0
    -2

    Step-by-step explanation:

    We need to set up the matrix to find the determinant

    a b

    c d

    To find the determinant we take ad - bc

    x + y = 8

    x - y = 10

    Take the coefficients of the x and y terms

    1 1

    1 - 1

    1 (-1) - (1) * 1

    -1 - 1

    -2
  2. 11 December, 03:18
    0
    Each X and Y in the equations don't have a number in front of them so they are all considered 1.

    D = 1 * (-1) - 1 * (-1) = - 1 - 1 = - 2

    The answer is - 2
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