Diketahui
kurva y = x²
garis y = x + 2
Hence, titik potongnya:
y₁ = y₂
x² = x + 2
x² - x - 2 = 0
(x + 1)(x - 2) = 0
x + 1 = 0 ==> x₁ = -1
x - 2 = 0 ==> x₂ = 2
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Diketahui
kurva y = x²
garis y = x + 2
Hence, titik potongnya:
y₁ = y₂
x² = x + 2
x² - x - 2 = 0
(x + 1)(x - 2) = 0
x + 1 = 0 ==> x₁ = -1
x - 2 = 0 ==> x₂ = 2