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y₁ = y₂
x² = 2 - x
x² + x - 2 = 0
(x + 2)(x - 1) = 0
x = - 2 atau x = 1
Luas = int[-2 - 1] (2 - x) - x² dx
= 2x - (1/2)x² - (1/3)x³ [-2 - 1]
= (2 - 1/2 - 1/3) - (- 4 - 2 + 8/3)
= ((24 - 6 - 4)/12) - ((-72 + 24)/12
= 14/12 - (- 48/12)
= 62/12
= 31/6 satuan luas
gambar lihat pada lampiran