^ = tanda pangkat. 1. 2 log 2^4+3log 90-3log 30 ? 2. 3log 6 x 6log81+2log 24-2log 6 ? 3. 2+3√5/3+√5 ?

==Jawaban==

1). ²log2⁴ + ³log90 - ³log30
= 4.²log2 + ³log(90 : 30)
= 4.1 + ³log3
= 4 + 1
= 5

2). ³log6 x ⁶log81 + ²log24 - ²log6
= ³log81 + ²log(24 : 6)
= ³log3⁴ + ²log2²
= 4.³log3 + 2.²log2
= 4.1 + 2.1
= 4 + 2
= 6

3). 2 + 3√5/3 + √5
= 2 + √5 + √5
= 2 + 2√5