A. 3B. 4C. 5D. 6
Jawaban:
PEMBUKTIAN
21⁵
= 21 × 21 × 21 × 21 × 21
= 441 × 441 × 21
= 194.481 × 21
= 4.084.101
7⁴
= 7 × 7 × 7 × 7
= 49 × 49
= 2.401
A. 3
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● 5√4.084.101 : 4√2.401
= 21 : 7
= 3
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