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Jawab :
α + β = - (-6)/2 = 3 ..............(i)
α . β = (2m - 1)/2 ................(ii)
α = 2β .................................(iii)
SUBSTITUSI (iii) ke (i)
⇒ α + β = 3 ⇒ α + β = 3
2β + β = 3 α + 1 = 3
3β = 3 α = 2
β = 1
SUBSTITUSI nilai α dan β ke (ii)
α . β = (2m - 1)/2
2 . 1 = (2m - 1)/2
2 = (2m - 1)/2
2 . 2 = 2m - 1
4 = 2m - 1
5 = 2m
m = 5/2