mohon jawabannya ya >>> 1. Jika a >1,b >0 dan c >1 hitunglah b log akar a . c log b pangkat 2 . a log akar c 2. Jika 25 log 5pangkat 2x=8 tentukan x 3.Dik : 2 l

2. 25log[tex]5^{2x}[/tex] = 8
[tex]5^{2}[/tex]log[tex]5^{2x}[/tex] = 8
[tex]\frac{2x}{2}[/tex] x 5log5 = 8
[tex]\frac{2x}{2}[/tex] = 8
2x = 8 x 2
2x = 16
x = [tex]\frac{16}{2}[/tex]
x = 8

3. 2log3 = a
2log5 = b
2log[tex]\sqrt{135}[/tex] = 2log[tex]135^{\frac{1}{2}}[/tex] = 2log[tex](3 x 3 x 3 x 5)^{\frac{1}{2}}[/tex] = [tex]\frac{1}{2}[/tex] x 2log(3 x 3 x 3 x 5) = [tex]\frac{1}{2}[/tex] x (2log3 + 2log3 + 2log3 + 2log5) = [tex]\frac{1}{2}[/tex] x (a + a + a + b) = [tex]\frac{1}{2}[/tex] x (3a + 2b) = [tex]\frac{3a}{2}[/tex] + b