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Verified answer
Persmaan kuadratsyarat mempunyai akar yang sama D = 0
b² - 4ac = 0
kx² - 4x + 1 = 0
a= k
b = - 4
c = 1
b² - 4ac= 0
(-4)² - 4(k)(1)= 0
16 - 4k = 0
-4k = - 16
k = 4