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Kita pnya rumus,
x₁ + x₂ =
x₁.x₂ =
Pertama mencari nilai,
x₁ + x₂ =
x₁ + x₂ =
= 1
x₁.x₂ =
x₁.x₂ =
= -4
Jadi yang kita mau cari,
+ --> disamakan penyebutnya
x₂ + 1 + x₁ + 1 /
x₁.x₂ + x₁ + x₂ + 1
(x₂ + x₁) + 2 /
(x₁.x₂) + (x₁ + x₂) + 1 =
1 + 2 / -4 + 2 + 1 = 3 / -1
= -3