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Bab 5 - Bilangan Berpangkat & Bentuk Akar
Soal:
2√20 + √45 = ...?
Penyelesaian:
2√20 + √45
= 2 × √4 × √5 + √9 × √5
= 2 × 2√5 + 3√5
= 4√5 + 3√5
= 7√5
Jawaban:
7√5
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