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[(1/2) √125 / (50/100)³]² a = 16
[(1/2) √(5² . 5) / (1/2)³]² a = 16
[(1/2) 5√5 / (1/8)]² a = 16
[1/2 . 5√5 . 8]² a = 16
[4 . 5√5]² a = 16
[20√5]² a = 16
400 . 5 . a = 16
2000 . a = 16
a = 16/2000 = 1/125
√a.[(½).(√5³)]
⇔ ------------------- = √16
[½]³
√a. [√5]³
⇔ ------------- = 4
[½]²
⇔ √a. [√5]³ = 4.[½]²
⇔ √a. [√5]³ = 1 .................. /kuadratkan/
1 1
∴ a = {[√5]⁻³}² atau a = --------- menjadi a = -----
{[√5]²}³ 125