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(k² - 5)x² - 4kx + 2k² - 2 = 0
b = -4k y a = k² - 5
la suma de las raices es -b/a
4k/(k² - 5) = 1
4k = k² - 5
0 = k² - 4k -5
0 = (k - 5)(k + 4)
k - 5 = 0 y k + 4 = 0
k = 5 k = -4
se considera el valor positivo por lo tanto k = 5 Rtaaaaaaa