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f(-2) = (-2)² -4
= 4 -4
= 0
f(-1) = (-1)² -4
= 1 -4
= -3
f(0) = (0)² -4
= 0 -4
= -4
f(1) = (1)² -4
= 1 - 4
= -4
f(2) = (2)² -4
= 0
f(3) = (3)² -4
= 9 -4
= 5
f(4) = (4)² -4
= 16 -4
= 12
Jadi, daerah hasilnya {0, -3, -4, -4, 0, 5, 12}.
Maaf klo slh.