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Verified answer
Materi Nilai MutlakUji titik ke (x-6)(x-4)(x-12)(x+2) =< 0
1) Ambil x = -3, diperoleh
(-)(-)(-)(-) = + (Salah)
2) Ambil x = 0, diperoleh
(-)(-)(-)(+) = - (benar)
3) Ambil x = 5, diperoleh
(-)(+)(-)(+) = + (salah)
4) Ambil x = 7, diperoleh
(+)(+)(-)(+) = - (benar)
5. Ambil x = 13, diperoleh
(+)(+)(+)(+) = + (salah)
Jadi,