jumlah pangkat dua akar akar persamaan x² - 3x + (p+4) = 0 adalah 5 tentukanlah nilai P ...?
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(x₁+x₂)^2=x₁^2 + x₂^2 + 2x₁x₂
x₁^2 + x₂^2 = (x₁+x₂)^2 - 2x₁x₂
5 =
5 = 9-2(p+4)
5 = 9-2p+8
5=17-2p
2p = 17-5
2p = 12
p = 6