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= 3 (3+2√2) / 9-2√4
= 3 (3+2√2) / 9-2×2
= 9+6√2 / 9-4
= 9+6√2 / 5
2. 13 / 5+2√3 = 13 / 5+2√3 × 5-2√3 / 5-2√3
= 13 (5-2√3) / 25-4√9
= 13 (5-2√3) / 25-4×3
= 65-26√3 / 25-12
= 65-26√3 / 13
= 5-26√3
3. √3 / √2+5 = √3 / √2+5 × √2-5 / √2-5
= √3 (√2-5) / √4-25
= √3 (√2-5) / 2-25
= √6-5√3 / -23
4. 7 / 3+2√2 = 7 / 3+2√2 × 3-2√2 / 3-2√2
= 7 (3-2√2) / 9-4√4
= 7 (3-2√2) / 9-4×2
= 21-14√2 / 9-8
= 21-14√2 / 1
= 21-14√2
itu doang yang aku bisa... maaf no.5 nya ga ke jawab.. soalnya aku ga ngerti... dan maaf kalau salah...