Jawab soal di atas dengan pake cara. Nomer 1 - 4.
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f²(x) = g²(x)
nomor 3
√(x² - 4x + 4) ≥ I 2x - 3 I
x² - 4x + 4 ≥ 4x² - 12x + 9
-3x² + 8x - 6 ≥ 0
(-3x + 5 ) (x - 1) ≥ 0
x = 5/3 x = 1
menggunakan garis bilangan didapatkan himpunan penyelesaianny
x≤ 1 atau x≥ 5/3
nomor 6
I3x - 3I = I3x + 7I
9x² - 18x + 9 = 9x² + 42x + 49
-60x = -40
x = 40/60 = 2/3