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OpenStudy (anonymous):
x + y = 12 x - y = 10 What is the value of the x-determinant for the system shown? -22 -12 -2
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OpenStudy (anonymous):
You use a 2x2 matrix for the system
OpenStudy (anonymous):
The determinant of a 2x2 matrix is in this form |dw:1347994109583:dw| To find the determinant of such a matrix, you would use the equation of ad-bc
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