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Verified answer
SPLKDVy = x² - 5x - 2 ... (i)
y = x² - 4x - 1 ... (ii)
Subtitusi Persamaan (i) ke (ii)
x² - 5x - 2 = x² - 4x - 1
-x = 1
x = -1
y = x² - 4x - 1
y = (-1)² - 4(-1) - 1
y = 4
HP : {-1 , 4}