Question

Ada yg bisa soal nomor 6,8,9,10 pake cara yaa, tolong dong urgent nih

Answer 1

6. log (x²+3x-4) = log (3x-1)
x²+3x-4=3x-1
x²=4
x=2

7. ²log²x+5 ²logx+6=0
misal ²logx=p
p²+5p+6=0
(p+3)(p+2)=0
p=-3 dan p=-2
-3-2=-5

8. ²log(3x-5) > ²log4
3x-5 > 4
3x > 9
x > 3

9. ²log(3x-6) ≤ ²log(4x-9)
3x-6 ≤ 4x-9
3 ≤ x

10. 2.log(x+1) ≤ log(x+4) + log 4
2.log(x+1) ≤ log 4(x+4)
(x+1)² ≤ 4(x+4)
x²+2x+1 ≤ 4x+16
x²-2x-15 ≤ 0
(x-5)(x+3) ≤ 0
-3 ≤ x ≤ 5