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p+q = -b/a = 6
p.q = c/a = -1
akar yg baru:
α = 2p+1
β = 2q+1
α+β = 2p+1+2q+1
= 2(p+q)+2
= 2.6+1
= 13
α.β = (2p+1)(2q+1)
= 4pq+2p+2q+1
= 4pq+2(p+q)+1
= 4(-1)+2.6+1
= -4+12+1
= 9
pers kuadrat baru:
x² - (α+β)x + (α.β) = 0
x² - 13x + 9 = 0
semoga membantu ya :)