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Using properties of determinants prove that: |(x,a,a),(a,x,a),(a,a,x) = (x + 2a)(x - a)^2

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Using properties of determinants prove that: |(x,a,a),(a,x,a),(a,a,x) = (x + 2a)(x - a)2

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Best answer

We know that

Taking (x - a) as common

Thus proved.

by (15 points)
Its too long method. I have a very short method.
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