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I have a practice question that I need explained and answered. Thank you so much!

I Have A Practice Question That I Need Explained And Answered Thank You So Much class=

Answer :

We want to determine the determinant of matrix C

Recall, if a matrix, A is

a b

c d

its determinant, IAI = a * d - b * c

By applying this for matrix C,

ICI = - 6 * 4 - (6 * - 2)

ICI = - 24 - - 12 = - 24 + 12

ICI = - 12

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