Can anyone solve matrices
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Can anyone solve matrices

[From: ] [author: ] [Date: 12-08-13] [Hit: ]
............
Hi! Does anyone know how in the world to do this matrix problem?

Find all values of x that make:

|2 -1 4|.............|x 4|
|3 0 5| = .........|5 x|
|4 1 6|

Thanks alot. Please tell me how you got your answer. (...'s are for spacing)

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Is this asking about the determinant?

The determinant of the thing on the right is x*x - 4*5 = x^2 - 20
The determinant of the thing on the left is, well, you should know the method for figuring that out. Here's the method:

http://www.purplemath.com/modules/determ…

Set that number equal to x^2 - 20, and then solve for x.
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