Let k an even natural number, k 4. Solve in Z the equation: 11 ... 121 = x². k-2 times b. Calculate, in two ways, the

Question

Let k an even natural number, k > 4. Solve in Z the equation:
11 ... 121 = x².
k-2 times
b. Calculate, in two ways, the determinant:
ca
bc
ab
A= a(b+c) b(c+a) c(a+b)
a
62 c2
=

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