No 1 dan 3 paling sy butuhkan bantuannya​

Jawaban:

1.2

2.9/3

3.3,7

maaf kalau benar

▄︻̷̿┻̿═━一 ~♥~Ahmad B.A~♥~

penyelesaian"

→ nomor 1

=> log (3+x) + log (5-x) < log (2x-1)

=> (3+x)(5-x) < 2x-1

=> 15-3x+5x-x² < 2x-1

=> 15+2x-x² < 2x-1

=> -x²+2x-2x+15+1 < 0

=> -x²+16 < 0

=> x²-16 < 0

=> (x+4)(x-4) < 0

x1 < 4

x2 < -4

hp = {-4 > x dan 4 > x}

→ nomor 2

=> ²log (x²-5) ≤ 2

=> ²log (x²-5) ≤²log 4

=> x²-5 ≤ 4

=> x²-9 ≤0

=> (x+3)(x-3) ≤ 0

x1 ≤-3

x2 ≤ 3

→ nomor 3

=> x²-3x-10 > -4+2x

=> x²-5x-6 > 0

=> (x+1)(x-6) > 0

x1 > -1

x2 > 6