tolong kerjakan pakai cara kerja.

3. Soal ekuivalen dengan ²log 8 - ²log 64 + ²log 32.
²log 8 - ²log 64 + ²log 32 = 3 - 6 + 5
= 2 (B)

4. f(x) = (x-1)(x-3)
f(x) = x²-4x+3 -> a = 1, b = -4, c = 3
x puncak = -b/2a
= -(-4)/2(1)
= 4/2 = 2
y puncak = f(x puncak)
= f(2)
= (2-1)(2-3)
= 1(-1) = -1
Koordinat titik baliknya yaitu (2, -1) (A)