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y = x² -1
y = 2x - 2
-------------(-)
0 = x² -2x + 1
(x² -2x +1) = 0
(x-1)² = 0
x = 1 dan y = 2x -2 --> y = 2(1)- 2 --> y = 0
HP (1,0)
grafiknya di lampiran 1
2.
y = x² - x
y = x -1
-----------(-)
0 = x² - 2x + 1
x² - 2x + 1 =0
(x -1)² = 0
x =1 dan y = x - 1 --> y =1-1 = 0
HP( 1, 0)
gambar dilampiran 2